You give a lot of information - with extensive bibliography! Thanks for that. I don’t have time to give an equally lengthy response or address all your points here and now, so I’ll just address an early one - and I’m sure others like James (@jammycakes) and others besides can give responses then as well.
You wrote:
It’s a common misconception that all deep-time dating is done to accommodate needed evolutionary time-frames. But this is simply not the case. Well before any evolutionary theory of life was developed there were already people like “Steno” who, in studying geological layers were seeing that there must be a lot more age to the earth than the standard few thousands of years that had always been assumed. Many of these early geologists were Christians and were not motivated in any way or form to promote atheism or to put down scriptures. They were simply doing what scientists aspire to do - follow the evidence wherever it leads. This even caused a lot of problems later (when evolution was the fresh new kid on the block) as the highly respected (and very much Christian) Lord Kelvin had seemingly indisputable thermodynamic calculations near the end of the 19th century that put the earth at around 144 million years old (and some other earlier smaller figures too - but always still in the tens of millions of years). Evolutionary biologists at the time had fits about this because it did not match the kind of time they were just sure must be involved to match what they were seeing and postulating as necessary. But … the math was there. And it was highly respected - even by the new fundamentalists of the day (like W.J. Bryan) who - along with so many of his time - even while they did not accept the new evolutionary science, nonetheless thought it obvious that the deep time scales had already been well-established and were beyond controversy. You won’t read much about these histories among all the sources you draw from because, unfortunately YEC proponents too often dishonestly omit information like this that doesn’t fit their narrative. It’s why so many here have left YEC behind - because we believe God is a God of truth; not lies and deliberate omissions.
Back to Kelvin’s 144 million years - obviously a figure not accepted today! - but just near the end of Kelvin’s life, radioactivity was being discovered and that changed everything! Now there was a known heat source in the earth’s interior, which completely overturned Kelvin’s figures (of how fast a hot ball would cool in space), but it didn’t overturn it in any way that could possibly bring that figure down into YEC ranges! Quite the opposite. It gave rise to radioactive dating that gave more clues yet. You dispute those dating techniques by accusing them of running with assumptions (such as how much C-14 could have existed in earlier times), but (as others here will inform you in much more detail if you want), those dating techniques don’t depend on such assumptions. Dendrochronology (examining the carbon isotopic content of ancient tree rings) is used to confirm the isotopic mix of carbon going back - even over ten thousand years I believe). And besides that the various dating techniques overlap and cross-confirm each other. True - some are only good for millions or billions of years while others (like C14) are only good for tens of thousands of years. But that is no different than choosing an appropriate scale to weigh a truck, but knowing that you need to use another scale to weigh a mouse, and a different technique yet to weigh a few molecules. But there are enough overlapping scales (and even self-calibrating methods) that there simply is no way (beyond an extensive multitude of necessary miracles and Divine fiat to inexplicably cause things to falsely confirm) - no way that any of this is wrong by the orders of magnitude that you need it to be.
A former (and now passed) participant here, Glenn Morton, used to be a long-time YEC himself. And he worked in the petroleum industry where they depend on accurate information to help them drill in right places for oil. You can read here and in many other places what his experience was when YEC met with reality. He wouldn’t agree with everyone here on everything - but one thing he knew: the earth couldn’t be as young as YECs claimed. You would benefit from reading his story. I may not have linked the best post above to show this, but elsewhere he admitted that he joined the oil industry as a YEC, even hired other YECs … and none of them (or their YEC beliefs) survived being exposed to that reality. When big money is on the line, they can’t afford to stick with ideology against reality. They go with the evidence, or else they will be drilling a lot more expensive dry holes.
-Merv
[added edit (which you can do by clicking the pencil underneath any of your own posts) … here is a link to a short article of Glenn’s on another web site that is also good. And he (somewhere else yet - here is a talkorigins article that hits a lot of it) has a decent compendium of ways in which the fossil record and geological strata cannot possibly be explained by one massive flood event.]