Muzzle brakes for hunting rifles not good for the ears and not necessary for performance/accuracy since one or two shots is all you'll get at game usually. Target guns and shooting a different story, you're not readjusting position for repeat shots as much.
Some SMG's have not brakes but compensators to help prevent muzzle rise.
When you look at brakes on howitzers they have angled ports to maximize forward force. Many rifle sized brakes are only milled at 90 degrees to the bore (cost savings) which lowers their effect.
Brakes on howitzers were made to shorten recoil needed at higher elevations of shooting angles so you don't have to dig a deep trench for the breech. They do not aid in accuracy and only reduce/shorten recoil.
I have a brake on my AR .223, it came that way but only makes shooting it louder. Smaller cals do not have significant recoil to make brakes really worth the cost, like anything for sale, much is marketing, create a "want" or make one dissatisfied for not having one.
It's obvious many are just machined to look "cool" with no real R&D done.
I see most brakes they sell today as a fashion option, and like high heels can hurt with prolonged use. Looks cool but hate to shoot it. I don't see older generations running to have brakes installed on their firearms. Marketing aims at mostly the youth, and they believe "looks" is just as or more important than function. How many take of their brakes before shooting their guns? Brakes installed on Win Mod 70's and such only decrease value like the dial a duck compensators of the 60's, 70's did with shotguns. Modifying a firearm from original configuration usually does this.
I should get a "blast' for some of my views but then again the brake does give that "blast" that brakeless guns don't have.
I'd like to hear any comments on why brakes on hunting rifles could be a plus.
Always room to learn.