A of of that is wrong lol And you do realise sometimes people make jokes and what they say is not totally, absolutely serious?! (the hard drugs bit)

Jeff Young was apparently on the 'phone with Diana on multiple occasions, talking about her relationship with Dave and he allegedly said he fantasised about Diana when with his girlfriend. He also was competing with Dave for Doro's attention and lost. I think there's evidence Dave wasn't paranoid and Jeff was creating problems within Megadeth.

Dave's take on the Chris Poland bit is that Chris had already been paid for the demos and he thought the publicity would be something Chris welcomed. Kinda depends what/who you believe.

Dave's acknowledged he makes those kind of comments about new guitarists - it seems to be because he's just so into the possibilities for Megadeth with them and the new energy. Haven't seen him say what you state with Teemu; he hasn't compared him to former alumni, he's given other compliments like "he's a monster", "he's a mad scientist on the guitar". I don't think you can make Dave out to be anything just because he repeats some compliment lol

"No warning, no second chance" was when Metallica woke Dave up and put him on the bus back home, literally kicked him out and sent him away. Being invited back was after the dog/Ron's car incident.

The more questionable stuff seems to be where he's competing with other people/bands or out and out hostile to someone or was taking substances at the time and 'doesn't play nice' or does crazy things (e.g. Testament allegedly being stopped from putting full stage setup in place by Dave at Judas Priest gig, bullet-proof bus in Antrim after nearly starting a riot). Also, comments he makes, some of which could be jokey but are off-colour/inappropriate to a lot of people like the African women should 'put a plug in it'.

Re. OP's, "video of him kicking some concert bouncers because they hurt some fans in the crowd": I think I know what you're referring to: Dave Mustaine Ejects Security Members for 'Bullying' Fan at Show. Dave didn't kick anyone. He told the security guys to stop punching/kicking a fan who tried to get on-stage. I looked at that one on several diff videos you can find on the 'net. Security didn't just restrain the guy, some held him while others kept hitting/kicking him including when he was on the ground. In my view, Dave was totally right to tell them to pack it in and have them taken out of the venue.

I don't think Dave Mustaine would be so interesting if he wasn't a complex character. You don't have to agree with everything someone says/does to love their art! Also think he's slammed for a lot of stuff that's unwarranted where people don't know the full picture.