PSL has its flaws but these are bullshit statements, an org doesn't have to go through a checklist every time they make an announcement just to prove to this dude that they're revolutionary, and the assumption that the protests were half assed is a spit on the face of everyone that has participated over the last years in the huge protests in the streets and universities at the risk of being beaten, arrested, or lied about by the media.
I'm not from the US, so take everything with a grain of salt. I don't believe PSL is an exemplary vanguard party, but it is one with genuine revolutionaries within it doing real work in the outside world and it succeeds at growing and gaining momentum, that is not negligible for a country with probably the most well guarded capitalist regime.
I'm hoping for Kopmala just to see the libs drop the mask when they are unable to explain the Democrat's actions in a wholesome humanitarian way