They're better with him, by A LOT.
I don't like him, at all, but I do like the Warriors. And as badly as I want them to be as good or better without him, that ship has sailed. They lost a title, when they were literally one of the best teams in NBA history, largely because he got himself suspended in a pivotal game. And every time he gets suspended, or injured, they struggle.
This will probably seem like a reach...but he's honestly one of THE reasons I've been so vocal about IU's offense needing to "modernize" and be more about ball and player movement. That's what he does, and what he facilitates for the Warriors. Curry is quite obviously the best player, and without Curry, they have nothing. But without Draymond, the ball stops more frequently, players stand more frequently, and as a result, they're decidedly less dynamic and efficient.
He's also why I think its essential to have at least 1 guy on your team that can dominate defensively guarding ALL positions. Its why I was so adamant that we needed a guy like Dexter Dennis a couple years ago...I have no idea what he ended up doing offensively for wherever he landed...but his versatility defensively, would have been HUGE for our team.
Also to your point...Steph has to be incredibly uncomfortable, at times, with Draymon'ds antics. But he's rarely, if ever, spoken out against him. Because he knows how important Draymond is to his own success.