That guy just sucks. And considering that the whole concept of his dumb little show is to get mad and quit... yeah, I wouldn't base anything on him.
You'll die in the game, sure. And frequently. But as long as you're not an absolute moron, you'll end up accumulating lots of extra lives. I had about 60-something by the time I faced the final boss.
And it's never that big a deal if you die, since you'll jump right back into the game after a few second.
Honestly, the majority of times I died in the game, I was laughing about it. I was having fun, and a death would usually come because of some tiny mistake I made, or some surface I wasn't paying attention to. It usually came off as funny rather than frustrating.
If that video is any kind of representation of gamers as a whole, where they just can't handle it if they're not constantly winning... then most gamers just need to chill the fuck out.