It's more likely to swing back the other way, in my experience. Entitled parents use their children as a weapon in public, but the attention often stops in private, when the parents want "me time" and still have a burdensome kid to take care of. The kid grows meek and people-pleasing to earn the parent's positive attention and grows emotionally stunted because "crying makes mom and dad mad, emotions are shameful."

It's still an absolute mess of course, but once a parent who shouldn't be a parent reaches a certain level of entitlement, the damage done causes things other than more entitlement.

I’m trying to enjoy “adult” activities

But that’s the point. They don’t want to enjoy adult activities. They want to inflict their own misery to everybody else.

Individual selfishness is responsible for… People having children, raising them, and bringing them places?

Am I insane or does that just on its face not make any sense?

Your first paragraph is the actual reason here. It’s too expensive for a lot of parents to get a babysitter, so they need to bring their kids with them if they want to go do something. And for many people like me who work from home (I don’t have kids yet but the point stands) that one night every week or so that we go out to dinner is basically the only time I go to do anything fun outside the house that isn’t working out. When I worked in an office (which I ever want to do again) I’d go out to lunch with coworkers and occasionally do a happy hour after work, but that isn’t an option anymore.

If I had kids we’d be bringing them with us when we go out because it would be significantly cheaper than hiring a sitter for a few hours.

I mean, most people are going to raise kids at some point in their life.

I entirely get people who don't have kids around wanting to have establishments with "no kids" rules. That's great, nothing wrong with having an establishment that caters to them. But I also think that people who have kids should have options that cater to them as well.

I’ve seen kids who sit quietly at a brewery coloring. They are definitely the minority but it does happen.

What happens all the time are parent who think their kid is in the well behaved minority. I have yet to meet a parent who isn’t convinced that their kid is “one of the good ones”

Probably, because it's a good chill space that serves drinks and they can socialize with their friends while Little Billy gets his haircut.

The same things that appeal to OP would also appeal to many adults that have children, even if those things are of no benefit to the kids themselves.

And the sort of person who'd take a kid to a venue like that, while ignoring how disruptive their kid is to the people normally there - that demographic overlaps pretty heavily to folks who also are completely fine paying $70 for a kids' haircut, because their own cut & colour or beard sculpting run a couple hundred.