Other than the obligatory "everything is class struggle"
The absolute fucking gall of these selfish piles of pond scum, who backstabbed Bernie while he backstabbed the left, to accuse us with the bullshit claim that the communists abandoned class struggle in favor of becoming theater kids performing kabuki plays. To speak out of both sides of their mouth from their armchairs that they too are shedding ~~crocodile~~ tears over the fight for Palestinian national liberation but for the communists to win they need to abandon the class struggle in favor of appealing to the same fucking demons contrapoints buddies up to in order to achieve lasting 
hope and change, they should just save everyone's time by finding the nearest solid brick wall and lecturing it until let's them walk through it
Yeah I don't think that if we became single issue focused on class struggle we'd be inviting "shitlibs and filthy centrists" into our "tent."
These people are almost definitionally anti-working class.
Class struggle isn't even a single issue. It's like saying I'm a single issue voter for democratic struggle or radical republicanism.
That's quite literally multiple issues balled up into a component of the overall ideology. Their entire political education is nonexistent and the void where it should be is filled with liberal moderate status quo warrior vibes