Well, not the same level (conservatives are clearly worse) but the line is increasingly becoming blurred in this day and age. Maybe I am looking at this wrong, but they are far more likely to shit on communism (while calling themselves lefist) and making excuses for the United States
I know "leftist infighting" has been a thing since forever, but it really seems like they're closer to reformed capitalism than anything resembling socialism...
I think you need to make a distinction between ordinary succdems and professional succdems. Lots of working class people arrive at succdemery when they experience society around them being shitty and look for solutions within the liberal system they've been raised to see as the extent of respectable, or even possible, politics. These people have the best intentions and can be moved too the left.
And then there's the professional succdems: Politicians, union bosses, etc. — everyone who draws a salary from being succdem. They are some of the worst people alive, a bunch of Rosa killing bastards, vicious anti-communists and self-congratulatory bullshit artists. Objectively the moderate wing of fascism. Never trust them at all. They will betray the left again and again and again.