Many leftists are extremely idealist and get swayed by Western opinion a lot. They dont support Hamas because Hamas are not the perfect MLs freedom fighters. This is childish and just gives ammunition to the liberals to discredit Hamas’ stance. This criticism of Hamas goes against the global decolonization cause. Every time a decolonial group fights against their oppressor, they are criticized even by leftists. Is this what Lenin referred to as left-com?
It sucks that people who one thought were comrades end up doing this. Like are we even on the same team or are you just a closeted liberal? It is crazy, unscientific and unmaterialistic to not consider Palestinian material conditions, and to not consider who they made their champions for this cause, but instead to apply your idealism to the situation.
As a few others have said, there's something to be said about repercussions for openly supporting an organization that is a designated terrorist entity in the country you reside in.
In some organizations I'm a member of, the question has come up as to why our official line is supporting a 2 state solution but we chant, "from the river to the sea" when we attend demonstrations.
Generally when this has been brought up, there is wide support for a 1 state solution but this goes back to legal repercussions espousing this publically.