Why does Left Twitter hate Greta Thunberg?

[I spent the winter writing songs about getting better]

I've noticed that those sort of accounts that have supernova level hate boners for The Squad and are constantly posting about how they're neoliberal establishment sellouts also often post about her also dripping in rage although the explanation is just word salad with "neoliberal" regularly sprinkled in. What gives?

[I spent the winter writing songs about getting better]

Some of these self-proclaimed leftists on Twitter are actually right-wingers at heart. One way to spot such people is to check the extent they criticize people based on where they fall on the political spectrum - if they criticize people on the left much more aggressively than people on the right, chances are they are actually right-wingers in left-wing clothing. (In fact, off the top of my head, I can think of two prominent individuals who have, in recent months, criticized the left a lot but have hardly criticized the right at the same time. The more "mainstream" leftist political commentators now consider these two people right-wingers in left-wing clothing.)

I'm guessing one is Glenn Greenwald. And the other?