Confusion caused by attempting to sort human beliefs in a one-dimensional space strikes again! To be clear I'm not agreeing or disagreeing with you or the parent poster, just commenting on the ambiguity.
TERFs falling out of favour with the "actual leftist subs" is also a relatively new thing... they used to be strongly TERF apologist at the very least, if not actively and heavily promoting them in the case of several of the more feminist-aligned ones. Think last few years. This isn't just a Reddit thing either; questioning their ties to the UK's main left-wing political party (which has actually influenced our laws for the worse) used to be way outside the range of acceptable leftism, but has suddenly become a controversial hot topic in the last few months.
Just because something is hated by most of the left doesn't make it "not left".
As a trans person myself. All that subreddit did was target hate towards trans people. Anyone care to elaborate on what else they did with actual proof?
Asking for actual proof now is a bit of a tall bar since the subreddit is no longer accessible!
Seems a bit strange that you'd simultaneously ask for proof and expect others to accept your premise as fact without also providing something more substantive than "I'm X so therefore I'm an authority on Y"