The wiki provides facts, statements and information about a lot of topics.
Based on the manual, posts and other sources.
It's inevitable that at some point some of that info gets superceded / outdated at some point.
I read each and every wiki page periodically and update stuff where needed. It's not feasible to do that with each firmware upgrade (same applies to the manual). Currently I seem to be the (about) only one updating the wiki on a regular (often daily) basis, and I'm not a paid Fractal employee.
A "vulnerable" area in particular: amp modelling and amp parameters and technical notes. That info is likely to get outdated first, simply because I don't always understand the stuff. ;-) I also sometimes leave stuff in there for 'historical' reasons.
Still, I think that the wiki information is up-to-date for at least 90-95%.