"He didn't sound like Axl?"
How is Axl supposed to sound?
You're so right. I think that Dexter sounded friendly, thoughtful and funny, and able to visciously rebuke people that attack his friends - just like friends of Mr. Rose describe Mr. Rose. But appearantly some people here have this idea of how Axl Rose should sound, how he should act, how he should be - they have their own ideal Axl
which clouds their perceptions. He didn't live up to their expectations, so they refuse him, he didn't create the music that they like, so they refuse his current band.