Depends what do you mean by "working on Bitcoin". I dedicate all my time to Bitcoin. I stopped working / having a job some years ago and I dedicate all my time, educating, helping other people to get onboard (for free). Is that "working on Bitcoin" too?

I also help quite a lot bitcoin apps devs with support for new users, translations, writing documentation, testing bugs etc. Is that also "working on Bitcoin" ?

And I am here on SN almost 24h...