I love Oasis. First really got into them when I was about 15 - a year after they'd broke up. But growing up in England in the early 2000s it's not like you couldn't know who Oasis were.
That's the thing about them. Whatever people think of it - and most of those opinions that they're 'pub rock' or derivative are actually just stereotypical, derivative opinions from people who have never really scratched the surface - they transcended music and became part of the culture. Not many bands or artists achieve that, certainly none from the last 15/20 years.
Not sure how anybody can listen to The Masterplan and suggest it's 'derivative', or Let's All Make Believe, or not be absolutely buzzing when they listen to Round Are Way. Those are three B-Sides (remember them)?
Oasis wore their influences on their sleeve and pulled it off. They had the quality to back up their arrogance. And whatever you think of their music, people got up (and still probably do) in the morning and lived for that band. That's mental. They're still the biggest guitar band in Britain, and they split up 12 years ago.
With the Roses, I love them too. Love what they did and the music they made. Don't have to categorise them as better or worse really. One couldn't have happened without the other but the Roses couldn't have happened without the Mondays and then that goes back to Chicago and the birth of acid house, and the birth of acid house goes back to the 60s etc etc
So it does kind of grate when I see someone say 'derivative' or 'pub rock'. Not sure Talk Tonight is a pub rock song, or Waterfall is derivative. Everyone likes what they like and that's fine.
Edit: Also, getting into Oasis and then the music that that subsequently got me into, led to me picking up a guitar and teaching myself how to play it. I never had the confidence to have lessons when I was younger and it's taken 3-4 years to even get remotely half-decent, but it's got me through some tough times (and got me a few shags, so, cheers lads)