see your point 😅 but still, being cyber expert doesn't mean that you must compile your own Linux kernel and write your very own drivers for the hardware, or else you're a normie 😉

Haha yes, it's mostly about impressions like bitcoin core devs using gmail accounts. But it tells a lot of person if he/she cares about some values and put them in practice.

Not really. There are many really good hackers with a Mac and I even know a few that run (and hack) Windows. Ubuntu is good, you need wide tooling for hacking. Also, we don't use "cyber security expert", no one who is one would use this phrase to describe themselves, ever :). If their business card says "cyber security expert", the only answer to that is "good for you, bye" :)

I'm happy just being a Linux enthusiast.