I am having a hard time believing it is just simple entitlement - most people who are anti-vaxxers, anti-maskers, verbally abuse waiters, cashiers etc tend to be bullies. They tend to just pick people who usually can't fight back and run away when their victims do fight back. I doubt they'd have the balls to pick a fight with firefighters.

It would take a special kind of arsehole to set fire, call 911/999, wait for them to come, then physically attack the firefighters. There is something else going on here.