Yes, anything that takes the work of a person (making a video, writing a game, writing a blog) is labor.

That’s not labor. At least not in any meaningful sense. No human is doing any work specifically to host your video.

I don't think recognizing it as labor needs to change how you feel about doing it at all. I'm doing labor that makes HN more monetarily valuable right now by writing replies and I'm obviously fine with that. And as to almost everything being labor in some way... well, that's the world we live in for better or worse.