Can't even blame them

Free speech? If we blame Zuck, and Dorsey, and Elon, why wouldn't we blame TikTok?

...the ones that shout 'free Palestine' voted and supported the people that banned them

I mean, not really? The "Free Palestine" people, sure there were normies there too, but they were also the more dissident left, who were calling Biden "Genocide Joe." They're also the ones crying loudest about the "ban" (again, forced sale, which I think is much worse and sets a very dangerous precedent, but that's a separate issue.)

The leftist "Free Palestine" people were not supporting the people who went after TikTok. They were their biggest critics, on that side of the aisle.

The left proved themselves to be unreliable allies so why bother covering for them?

That's absolutely correct, though.