Most of the guys at my range shoot with brakes, where not there to pour lead down range . We shoot for accuracy , fire after each other . A brake allows you to stay on target , less hop an makes shooting a high powered rifle more enjoyable. If your respectful of the shooters to the sides of you its not a problem.
Shoot next to someone shooting a 338 Lapua with or without a brake , but if you take turns its no big deal. I find 98% of the shooters respectfully & great conversations. If you want a brake get one.