I think there is nothing wrong with making a living on YouTube or wanting to make a living off YouTube. But there are a few things I find wrong about it and don't like.
First, is if you only making a small amount of money (like maybe $100 a month) but you still call YouTube your full time job and then you just get a whole bunch of government benefits and patreon and other random stuff to support you and complain about how broke you are. In that case, you should get a real job, I see nothing wrong with having YouTube as full time job, but I keep seeing creators claiming YouTube is their fulltime job when they don't even break 100k views a month. That's just lazy. Having a job outside of YouTube teaches time management and real life skills (which sadly some people on the internet lack).
I also don't like when people upload copyrighted material and make money off it. There are tons of movies, music videos and tv shows on YouTube that somehow YouTube didn't catch, (makes sense because there is 100 hours uploaded every mintute) but still, it makes kind of upset when I find people who make money off it. Apparently one of the things, I've seen is people uploading other peoples vines to YouTube, I know people are making quite a bit of money off that. I think that is unfair.
Also, I think it is wrong to quit your job for YouTube after only a month. Now this one doesn't really make me as upset as the other ones, but I'm just saying YouTube can be weird thing and you never if you can make it. Just because you made $1000 one month you could make $10 the next. Also, any high schooler who drops out of school for YouTube is just stupid, unless you have a really successful channel with opportunities you can't pass up, at least graduate high school, you can't get anywhere in life without a high school diploma and who knows how long YouTube could last.
I think most people on this site, even if it isn't their dream to be a full-time YouTube if they were somehow offered the chance they would take it. It is an extraordinary lifestyle and a career unlike anything out there, you control all the shots and can do what you love. I'm sure it is harder than it seems, but obviously there are a lot harder careers out there. Yes, there are people that work a lot harder and earn a lot less money then some of the bigger YouTubers, but that this is just the way life is. But I will say that from my experience making videos on and off YouTube, making quality content on a regular basis and pleasing an audience isn't necessarily the easiest job in the world, but when it is enjoyable it doesn't even seem like work and that is why they keep making videos.