Larry may have left the project, but sticks his oar in frequently, see for example the Nine Theses he posted to Wikipedia last year: https://en.wikipedia.org/wiki/User:Larry_Sanger/Nine_Theses
Neither Larry nor Jimbo "are" Wikipedia. Wikipedia's editors are Wikipedia, and if they collectively agree with any of Larry's policy ideas, they'll adopt them in time.
I used to glibly agree with what you said, because back in the early 2000s it was primarily the right-wing nutters being fed a diet of Fox News bullshit that were deranged from reality... "reality has a liberal bias", right? Remember the crackpot Conservapedia? But these days I find plenty of equal opportunity derangement from terrible news sources chasing clicks, promoting FOMO, anxiety and keeping their readers/viewers addicted. No political flavour of bullshit belongs on Wikipedia.