No I've seen them that many times I dunno how many shows I've met them at. But yeah this guy is wrong, and all of the guys and all of the crew I've met are really nice people. Although it's like a month old so I'm sure the "ex fan" has realized this by now.

To reply more directly... I have watched these guys and their management in two different venues and I have never seen a band or management that is more fan friendly than these guys. They know their success comes from the fans and appreciate them too much to permit mistreatment of those very fans.

Yes, actually. I have had numerous good experiences with almost all of the people employed by 3DG.

In October 2007 I had won a contest to sit in on an interview with the band before the show. The weather was really bad that day, and the people interviewing couldn't make it. Their tour manager was obviously contacted to inform him that the band no longer had an interview. He called the people I had won the contest from and asked for my phone number, and called me about two hours before the show (at this point I was a bit upset that I would no longer get to meet them) and asked where I was so he could come out and get me to come backstage and meet them.

In August 2008 I had purchased tickets through Neil's charity auction that included a meet and greet. Their manager once again called me before the show, asked me what time I would like to meet the band, before or after the show. After meeting the band he found out that you needed wristbands to get into the front of the pit, which I already had. The person I was with hadn't been able to get one, so he spent about twenty minutes going to different venue security until he could get a wristband for her.
This man also happens to do their sound, and at this show I asked the guys if they had their setlist done already (this was after their soundcheck, so I was expecting them to just say yeah and not add anything) they said yes, but asked if I wanted to hear any song in particular. I told them I would love to hear it's all over live, and the band were amazing and played it for me. Their manager and crew just winged it and made the song sound as good as they could without soundcheck. It sounded really good. As someone that does sound for small shows, adding in something like that at the last minute can definitely be more stressful, especially considering the band has played it a total of three times live including that show.

Those are my most specific examples. Their crew have always been really good to me. After the shows they always give me picks/setlists stuff like that. They organize any kind of meet and greet really well, making sure we get into the venue early. Thirty times seeing them, and I've honestly never had a bad experience with Three Days Grace or their management.