Biggest fear is that a 47 might follow lead of a right-wing populist elsewhere (and/or a right-wing populist elsewhere might be inspired by 47 in Oval), who's done the math to realize that rather than tamp down antisemitism with jingoist Islamaphobia, the tides of global public opinion have turned sufficiently to make it politically advantageous to instead unleash that antisemitism full force.
At which point, we go from weapons sales to Israel to weapons deployed against Israel.
Basically, OG neo-Nazism exploits ZioNazism to make a play for White Alt-Right Populism that goes after "Zionist" conspiracies for "wokeness" and "cultural Marxism" to win over the less privileged mid Whites.
It's very possible that this variant could even become the "swing vote" bloc courted by both major parties, or even a minor third party on its own.
This is the main reason why the antiracist/antifascist Left needs to consolidate and defend their own.