If you listen to what Fuentes says (or atleast what he's most recently said during the Iran War coverage) he acknowledges that the viable candidates, no matter the party are all zionists, and have been for a long time. Only recently has he defended Biden as less zionist than Trump. He claims his reason for voting Democrat is to "punish the Republicans" for not doing what they were elected to do, and hopefully for a more "America-first" faction (aka Groypers, basically) to rise within them and supplant MAGA. I doubt he expects this to happen between 26 and 28. But he has repeatedly reinforced he is Never-Vancer, and when asked "who else?" He pleaded to wait for someone worthwhile.
Now this just exposes how psychotic he is when juxtaposed against other recent claims that if the Democrats win 2028, they are very likely going to wield governmental violence against conservatives, and that he will leave the country if it happens because he's scared. But that's not surprising when you look at his attitude towards Jan 6 and the people who were locked up for him.
Anyways idek how much he'd dipped his toes into antisemitism by Trump 1, but even if he had, he wouldn't have been a single issue voter based on it, nor would he have known the excruciating extent of Trump's zionism in 2016 or 2020, and even after all that, he would've still believed both parties were equally zionist at most.