I love me some gaming videos! Whether its a 'lets play', a Twitch stream or a MTG deck building video, i am a big fan of amateur video content. I agree that quality varies, but i find this inevitable. The nature of amateur video means that some people will just 'have a go', or bash out something to post on their site.
I guess it could be frustrating when a video
almost lives up to expectations and you would want more, - but for some production issue that nags you so much you can't stand it. I personally have this problem with a couple of audio podcasts.
As for people not correcting these glaring problems, i guess the producers have different standards and expectations of what makes suitable content, even though most of their viewers would more likely want something better.