The plan page just says "More usage" it doesn't say any 10x multiplier. Literally just says "More" than plus.
Afaik the usage quota nerf to $200 Pro is true. Twitter is all over them right now. (Also you haven't been able to buy the $200 Pro plan for the last two weeks or so)
Seriously, even the "Learn more about limits" link just takes you to the posted page where it literally says nothing about limits or usage. Not even x20 or x10 or whatever, just zero information on what "more usage" actually means. I don't understand why they can't provide how much token usage you get.