The sensitivity is probably best explained like this: imagine you enjoy a thing. You are not asking for other‘s opinions, you just want to enjoy the thing in peace. In comes a nosy little cunt that is way too curious about what you are doing.

You don‘t mind too much, the cunt is interested, the cunt get information. Now the cunt has never heard about this thing being enjoyed, so the cunt voices their opinion.

You still don‘t mind. But now the cunt is insecure because you seemed to care so little for their opinion. So they start asking for other people‘s opinion on the thing you enjoy. Now suddenly, everyone is up in your business asking questions and giving out opinions you had never asked for.

The cunt does not even need to say any names, other people will put two and two together. Add to that the fact that the cunt, in their inexorable quest for judgement validation, has likely exacerbated things and misrepresented the thing you enjoy. Not through malintent, just through lack of knowledge.

The consequences range from mildly annoying to downright having legislature created to stop the thing you enjoy because some bigots can‘t live with the thought of you enjoying it.

Hope you get the idea.

Fuck outta their business. Wth?

With that attitude, the only thing you stand to win is a broken relationship with your brother. You do you, just remember: if you play stupid games, you win stupid prizes.

The only way to really know what it means is to ask him with an open attitude. We don‘t know, either.

Personal experience: my gf worries a lot about me when I‘m on business trips. She wants me to check in just to know I haven‘t been in a car crash or similar. I oblige, always annoyed but I do, because she has a point. In other situations, that would feel like I‘m twelve and shouldn‘t be out past curfew.

Might not be much physical effort, but the mental effort of telling someone „no, I‘m a responsible adult of sound mind, the situation is under control“ can be immense. Why would you even doubt that?

It might not feel like that to you, but it sure does to me, and I suspect it does to her. Would you feel better if she answered „I‘ll be out a little later, catching a cab around 4. Love ya honey 😘“ while getting railed by another dude? Worst case that‘s all you would achieve.

I‘d advise splitting this up into two problems: You wanting her to check in more often. You worrying she might want to cheat on you.

Do not mix them with each other, cause neither‘s solution will do fuckall for the other problem - at least if problem #1 doesn‘t exists solely because #2 exists.