Curious!

That's not a real job. It's a side gig at best and a pretty juvenile one as well. And do you want to date a guy who watches hours of content of other women every day, even if it's for "work"?

Maybe it's because I work in an adjacent field (not video editing, but similarly unglamourous behind-the-scenes work that only exists in the internet age, therefore plenty of people find it hard to see it as a "real job"). I'm going to say it depends.

Sounds like he works on a contract basis. Working for clients is like having multiple bosses. What kind of attitude does he have towards his clients? If he keeps it professional, it's potentially a good thing that he's the kind of man who is able to take direction from female bosses.

It's true that contract work can be unreliable. It makes a big difference whether he gets enough work, and gets paid enough for it to be steady work. It's a good sign that he's apparently doing editing for multiple channels, because audiences are so fickle that you wouldn't want to be completely out of work if one channel takes a downturn. But are all these streamers connected somehow? If one channel fails, would the rest fall like dominoes?

What kind of content are the creators he works for making? If it's trash meant to appeal to the male gaze, that would be a red flag. We don't know anything about the people he works for other than "female". A guy who works for smart, opinionated female creators could be okay. A guy who works for male creators but they are all red-pill dude-bros would not be okay.

I don't see doing video editing as a "block him immediately" thing in and of itself. She should use caution if she proceeds, but that's always the case no matter what the guy's profession is.

Every content creator I've met was broke.

It’s not a red flag per se, but why entertain mediocre when you can aim for better?