This has given Iran an unprecedented level of popularity and credibility in the Islamic world.
How did Iran-Israel relations even get this bad to begin with?
The 1979 Iranian Revolution installed the Islamic Republic and repudiated the previous government's relatively amicable diplomatic relations with Israel.
The CIA deposed the elected leader (people forget Iran was a secular democracy), and put in a puppet Shaw, which then the population revolted against.
So we are friendly with Israel, but only up to a point, if they get in the way, and are hit with some 'splatter', so be it.