Personally, I don't mind that "content creator" is a thing, but what irks me is that, at least in the Youtube I see, "content creator" is the ONLY thing.

If I search for ANYTHING, I get a tutorial, or tips, or some clickbait like "I had no idea about this!" Every video is by someone whose job is Youtube. The giveaway is that all of them have custom thumbnails. Someone who just made a random video about something and posted on the free video platform wouldn't even have bothered getting a custom thumbnail for it. You can't find those videos, at all. At this point it wouldn't surprise me if a custom thumbnails was a requirement for the algorithm to consider your video even if it isn't spelled out anywhere.