Slash thinks rock music has been "dull and boring" for the last decade.

The Guns n' Roses guitarist believes commercial forces had a negative 
impact on the genre as bands were pressured into making their songs 
radio friendly rather than doing something new and exciting, prompting 
fans to find what they're looking for in other genres such as rap and 
hip-hop. 
 
He told Billboard Radio China: "When Velvet Revolver came out, there 
was definitely a movement that started in the early to mid-'90s that 
held up all the way through the end of that decade and went into the 
millennium. And so we came out and there was tons of new rock and roll 
bands. And they weren't 'nu metal' and they weren't indie bands, but 
there was definitely this kind of indie-esque feel to them. 
 
"And I think one of the reasons that Velvet Revolver was as successful 
as it was had a lot to do with [singer] Scott Weiland, because he was 
still a holdover from that kind of thing, with Stone Temple Pilots, 
that came from the '90s and blah blah blah. Anyway, but it was all 
cool. 
 
"And then, as we got down the line, it seemed that rock sort of got... 
More than anything, the commercial approach to rock and roll that the 
industry forces on bands, or forces people to think that this is how 
they have to go about it to succeed, and it just turns into this 
generic mishmosh that manages to get on the radio but doesn't really 
turn anybody on, and it's just dull and boring and people start 
looking elsewhere."

https://tucson.com/entertainment/music/slash-rock-got-boring/article_62b55cd8-7462-58d5-9ab3-dd7d213ffd57.html