Just an awful take, which is no surprise. According to Bissonnette which seems supported by the arrest of the 6 other guys and news coverage:
1) it was a restaurant with a bar, not a bar. So there was no bouncers. Bissonnette called it a family restaurant.
2) Bissonnette was a regular going there multiple times a week so he knew the staff
3) The guys laid hands on the manager before Bissonnette decided to step up.
4) The other guys threw the first punches as soon as he stepped up.
5) There were at least 6 of them to 1
If you think someone is wrong to step up and help a restaurant manager defuse volatile customers, you are callous or a coward. Getting in their business is a ridiculous portrayal of helping someone who is getting threatened by 6 drunk guys. But even if someone "sticks their nose in your business, you don't throw hands. And you especially don't attack him 6 on 1.
I respect Bissonnette for stepping up to help. Very few people have the bravery to do so. As the saying goes, "the only thing necessary for the triumph of evil is for good men to do nothing", Bissonnette is a good man for not standing by in my book.