They changed some words pretty much right after the acquisition. There was some controversy when they started doing "themed" words (like Christmas stuff in December) vs more "random" words. Some words were also removed for having negative vibes/political liability
They removed WENCH from the list of upcoming solutions fairly quickly, but forgot to add it back to the list of available words so you couldn't use it as a guess for a little while. It made it back to the list eventually.
I believe these lists are more like what is described in the blog post. Diction of words, filtered to 5 letter words, no plurals, etc. It most likely has 99%+ of the words, but maybe some they don't actually use in Wordle.
