Its not illegal, though. I can go out into public right now and say it with no repercussions. If it was illegal, how would anyone possibly inform other people of actual fires and bombs?
The thing that is illegal is causing a panic in a large group of people. Has nothing to do with the words used.
I just feel that the nuance is important. Any combination of words could get you in trouble if it happens to cause a riot.
It’s not that the union head should be neutral. The head of a union should be openly and unapologetically pro-union. Going on a podcast and agreeing with someone who is right-wing extremely anti-union, is a very bad and traitorous look for the head of the union.