I’d say it’s not so much pro-Palestine, but more is just so anti-Jewish that it turns into de facto support.

No, it’s real. For some Nazis the Jews are the ultimate enemy and they have cynically attempted to graft themselves to the Palestinian liberation movement as a recruitment tool. They obviously don’t give a shit about Palestinians but if they can weaponize Israeli war crimes to foster anti-semitism they can recruit more people into their movement.

It’s similar to how some far-right extremists participated in the George Floyd protests—both because they’re anti-cop and they wanted to start a race war.