The YEC position is absolutely at odds, to an extreme degree, with what the vast majority of astronomers, geologists, biologists are convinced are truths about the Universe.<
Yes- with this I would totally agree. However, please understand I am not arguing for a YEC position. I am not convinced about their position on time either.
Regarding what most astronomers, geologists and biologists are convinced about needs to be considered along with their philosophical and religious a priori beliefs. These beliefs will come first and foremost before any ‘evidence’ is weighed. A man will interpret ‘evidence’ according to his religious worldview. The reason why Lawrence Krauss has come to the conclusion that ‘nothing’ must naturally produce ‘something’ is because he is first and foremost an atheist before anything else.
What we know as modern geology grew out of the enlightenment understanding of the world which is both ant-God anti supernaturalistic and is based upon the a priori assumption that everything has continued as before i.e uniformitarianism. Were uniformitarianism ever proven to be wrong categorically, then geologists of all persuasions would need to rip up the geological time scale. But they are not going to do that because ‘evolution’ depends upon their naturalistic timescale.
But I know from being in a natural science field that they’re not talking through their hats, so I take them at their word.<
You have it right when you say the ‘natural science’ field. However anyone espousing a Christian worldview has already admitted supernaturalism with regard to origins i.e they have no necessity of totally relying upon explanations which are purely naturalistic. The real point of contention is between naturalism and supernaturalism. It is needful to factor this in when listening to ‘scientists’.