Just because there are a bunch of complaints on the forums doesn’t mean the game is bad or broken or whatever. There are MILLIONS of people who play this game; the number of those who come here and gripe are far less than 1% of the total player base.
And, frankly, most of what I’ve seen boils down to personal opinion, not actual fact. It’s fine not to like Mayhem 2.0, but that doesn’t mean it’s broken. Plenty of people - including people that play M10 exclusively - play the game for hours every day and have no trouble doing so. You can watch a number of streamers do it on Twitch almost every day if you want proof.
But what you said, what I responded to, was “the game is a mess”. Even if I were to agree to dislike Mayhem levels, I’m not going to agree that the entire game is a mess. That’s just - wrong. It is quite playable for the vast majority of us. If it weren’t, Gearbox would have far more problems than just the people coming to these forums to air their issues.
And yes, I play on higher Mayhem levels - but that really is beside the point. My beliefs come from more than just me play the game, it’s also watching others play it since the beginning, for some 9 months now. Most people play the game just fine (at M10). It is not “a mess” for most of us.