[tavavex]

Honestly, I didn't even think of BSD. I actually don't know anyone who uses it on a personal level, I assumed it was more of an OS that you had to use for your job. But I guess, given how niche it is for individual use, you'd be right. But to be pedantic, if you took something really obscure (like hobbyist OSes that have little practical use), you'd probably get to a 100% "hacker" user base.

[cyberpunk]

Playstation, Juniper, NetApp, Netflix to name a few small users. If you touch any of these, you use it too.

[tavavex]

I know many OSes are based on FreeBSD, I assumed that OP implied people who used the actual standard distribution of it, not highly-customized embedded or similar versions. Also, using Netflix wouldn't make one a BSD user just because it's what they run on their servers.

[flohofwoe]

Don't forget macOS and iOS, Darwin is also derived from BSD.