Real job in terms of stress rather than time. 5h hacking on your.own thing != 5h contriburing to a big repo and doing something called "incident response"
Yeah, I understand what you mean. I guess I'd define "real job" as "Trade your time for my/our money", and if you're not getting paid (now or in the future), you're in one way or another "volunteering", no matter how stressful it is, what area the work involves, or the size of the thing you're contributing to.