What public situations are you referring to?
You can compare Benoit to Tony in the sense that a billion dollar company isn't going to take risks with someone they think is that volatile. I wasn't comparing the end result of Benoit to Tony, anyway, only how WWE would have dealt with Benoit had they any clue he was that mentally unstable.
And billion dollar business work with Kanye because he generates that sort of money for them. Tony doesn't do anything like that for the UFC. He never has.
It's also different in this case. If Kanye flipped out and killed someone, that isn't going to come back on anyone he works with in terms of them being blamed. If Tony went crazy and did something really stupid, WME would pay for that. He's a fighter who gets punched in the head for a living and there is no way the media wouldn't relate that to whatever crazy thing he done. The UFC would then be taking a lot of heat for allowing that.
I honestly think Tony has had some mental problems in the past, but nowhere near the extent that he or a lot of fans have made out. The way he treats people, the stupid videos, the dumb way he tweets is all very intentional and not the traits of someone who is crazy or whatever. He knows exactly what he's doing with these things.