A lot of youtubers still have "real jobs". I find the term "real jobs" a tad offensive since it sounds like if someone doesn't work a typical 9-5 job, it's not considered a job at all & people look down on them. There are so many jobs out there in the world, especially for all the creatives like musicians, photographers, videographers, models, actors, influencers etc. Are they not real jobs to you? Do they not make money & work hard for their money like any other job? If anything they work harder since majority of them are working for themselves & not under someone elses dream/company. If someone is doing what they love & getting paid for it, it's still a real job.
I have seen a few successful established channels from older people who don't put much editing into their video & they're just using their webcam to film. These people also have "real jobs" & don't engage on social media much. Their content does all the work. Their personality & the great informative, educational content their are putting out there is getting people to view & subscribe.
My family watch youtube just as much & they are older, my nan always watches after coming home from work to wind down, my grandad who's retired watches youtube rather than normal tv since he can search up whatever he wants to watch. There are a lot of political & controversial topics on youtube, there's something for everyone on youtube to enjoy. A friend of mine who is a retired air force militant watches all his history, political, government content on youtube. You'd be surprised at the amount of older people who watch youtube but they don't comment or engage but they still enjoy lots of different content. Just because you're old doesn't mean you cant enjoy & watch prank videos does it? Or any funny video or gaming video or whatever the person takes interest in. & for posting content, I would honestly love to see an elderly couple do funny vlogs or prank video's on youtube. Or even something simple like talking about their life lessons & experiences especially if they were involved in a big event. I'm a young person, but I enjoy history just as much as I love my beauty & fashion. So you see, age is really just a number that goes up every year. Age doesn't determine success. Technically no one should say whether someone else is successful or not since it's that person themselves who can determine whether their own life has been successful or not.