The far left hasn’t adopted Zionism. Are you saying that “Zionism” doesn’t exist, that it’s something in the imagination of the far left? Benny Morris (e.g.) would disagree.
Call me old fashioned, but I've only ever heard the term 'Zionism'/zionist bandied about by conspiracy theoriests of the antisemitic variety. I'm saying that the adherents of the far left are finding common cause with the scumbags on the right in their hatred of Jews and Judiasm. And personally, I find it alarming.
There’s so much Hamas support combined with rank antisemitism at every single “pro” Palestine rally in recent memory [1][2][3].
And it just gets swept under the rug by legacy media. Imagine the outrage if the same exact behavior was documented of anyone identifying as politically on the right.