I’ve never heard this term before, but I think the key phrase is “party who disagrees with a speaker’s message.” Presumably, the people calling in bomb threats are on the same page as Vance, so they’re not hecklers, and any pressure on Vance to stop is an unintended side effect. If people were calling in bomb threats to Vance’s rallies, that’d be a heckler’s veto.

Ultimately, though, who the fuck cares. Jesus Christ, libs are insufferable.