they arent. they are on the side

Influencers, VIPs, friends and family, other bands, people who work at the stage etc.

Probably blew out his voice doing that no mic scream, he wants to seem loud so he may push his vocals further than they should, doing this time after time can damage your vocals

Bro tours all the time. When youre screaming for over an hour 100+ nights of the year your voice is going to get tired and youre not gonna sound 100% every single show. His voice as a whole is fine (as of now) he just sounds tired. But like fella above said, of he keeps showing off doing that no mic roar all the time hes gonna be cooked in a few years time.

Phone recording...