I'm sure Axl's voice has changed in 30+ years, but... I've said it before, and I'll say it again: On all five shows I've been to, Axl's voice has been perfect, including the whole band. The gigs were AMAZING!
All the shows lasted for more than 3 hours. At the last show I have been to, the sound mix may have not been perfect, where I was standing, but I was super happy with the whole performance.
I think the problem is that if you get used to a studio recording, you probably expect to hear exactly that.
I remember the moaning from the so called fans, about Axl's voice and shape back in 2006, 2010, 2012... go back and listen to the HD recordings... Its different compared to the 90-ies but its amazing.
The man can definitely sing and the band can play. Its only a matter of what you expect to hear, and will you join the millions of happy fans attending the concerts or will you sit at home and moan on a message board.