For me it's as much a hobby as it isn't at the same time. I try to make videos at a decent pace, at least something new every weekend. I do stay up late nights working on them until I get them done. And as a reviewer, it's gotten to the point that every time I see a movie or something I just feel the need to review it and make a video out of it.
Sadly the part that makes it a hobby is lack of enough views/subs to make any money off of it. Whenever I actually make something off the videos, then I can start saying it's more than just a fun hobby... and I can better justify those long nights editting.