Yeah I haven't actually spotted Zionist tankies ever.

Though it would make sense for socialists to really hate Hamas given that it's a fascist organization that massacred people living in Kibbutz's which are socialist communes.

But tankies don't really care for socialism, I don't think most of them even know what it is. Tankies are generally simple minded people that like the aesthetic of Che Guevara t-shirts, and red flags with yellow symbols on them. It's about being rebellious against whatever they feel mommy and daddy like. They're generally in university which means mommy and daddy are well off and so socialism feels like something they wouldn't approve of, so they throw on a Che Guevara t-shirt and wave around whichever red flag they think looks the coolest.

So the US is always the bad guy, any allies of of the US are also bad guys, and therefore any adversary of the US or it's allies must be the good guys. Doesn't matter how horrible an enemy of the US is, they will look the other way so they continue to subscribe to this simplistic fantasy world view. At least until they finish university and become the asshole bosses of the working class.