That's totally fine. I'm guessing you send off signals that you're uncomfortable with it.
Part of social skills is knowing how to read those signals and respecting them. There are definitely people who I take pains to not touch (due to the signals they send), even in a crowded bar.
I'll tell you it's definitely not a power thing. Most of the time, it is somewhat reciprocal. If it's not, then any well-adjusted person backs off.
"You're weird"
"I read signals well, therefore I wouldn't trigger this"
Maybe you do. That's great. Then again, maybe you don't and don't realize it.
The tech industry has a well known bias toward somewhat not socially adjusted people, or at least, not neurotypical, and the massive influx of money hasn't put the breaks on manipulators who are just there for the money and power.
So you get people who don't read signals well, and you get people who read signals and blow right through them on purpose. Sometimes it's hard to tell the difference.
It's not bonding. It's a power thing, I think. "I can touch you, but if you call it out, then you're the one who is reacting and being 'sensitive'". (reversed, obv).
You may think it's an important part of platonic settings between men, but.. eh, stay away from me.
Accidentally brushing someone in a crowded bar is a red herring. (Unless it's an 'accident'.) That's completely different than invading someone's space to touch their elbow.