There have already been extremely obvious attempts to steal US elections. The guy in charge right now tried to lead one. Some were even successful. People weren't rioting in the street or overthrowing the government when Bush got handed the election by the supreme court, and that's a much more recent precedent that refers to a successful steal, rather than a failed one.
Did anyone who tried to rig this one election 80 years ago face consequences? Were any measures taken by those in power to prevent another attempt?
The fact that he is Jewish means he should say Israel because it draws a necessary distinction between Judaism and Zionism. Jewish people being openly anti-zionist makes it clear that conflating it with antisemitism is disingenuous.