I wouldn't describe you as having any useful knowledge of the left (even to the extent of being able to identify the part that is the “far left”.)

> What I've observed is a political group largely held together with

The far left isn’t “held together” at all, but riven with fairly deep internal divisions. Whatever group you see that seems unitary and held together by anything is a much narrower faction than “the far left”, even if it happens to coincidentally overlap with it. In the particular case of the one held together by:

> an obsessive compulsion to root out any element not in line with its own brand of correct thought, which contains a variety of maximalist interpretations on everything from sex and gender to race and institutions.

It’s mostly a fairly narrow vocal largely petit-bourgeois faction of dilettantes inspired mainly by a weird blend of identity politics messages concocted by center-right groups to look progressive while preventing class solidarity occasionally (but not consistently; a lot of them are pretty much exclusively focussed on non-economic-class identity politics) mixed with progressive economic slogans that that are, at best, dubiously compatible with their particular brand of identity politics.

Being extremely generous based on the subset incorporating, however poorly, leftist economic messaging as a component of their platform, one might consider this group to overlap with the far left, but it certainly is not the same as the far left.