Mutations, allopolyploidy, recombination, etc., etc.
What do you want here exactly? Here are some examples of taxa that fit well with evolution and make much less sense without: Myllokunmingiidae, radiodont arthropods, scaphopod-like rostroconchs, intermediate forms between species in the Yorktown Formation and the recent, gorgonopsids, labyrinthodont stem-amniotes, etc., etc.
Yes, by multiplying (number of mutations) x (time/mutation) to get time. Now, these time outputs have very wide error bars much of the time (and should, as the calibration process is very sensitive to small errors and very difficult).
Then why is it that I keep finding evolutionary intermediate taxa?
What exactly are insertions, allopolyploidy, and symbiogenesis, then?
1 in a million is common when we’re dealing with billions of mutations appearing in any given generation.
Those have been demonstrated. Thousands of times.
No, that is wrong. I can observe changes over time in a genus of gastropods from the Miocene to the Recent, with distinct species and intermediates between each one. Those are the same process. Siphocypraea is a good example.
Again, what are insertions and allopolyploidy?
They are exactly the type observed in evolution.