"arguing on the internet is like... wasting your time. But it's nice anyway. You can't take the things you read in internet too serious.
And what makes you think the old guys deserve more respect? Are you used to lick their balls? Such a childish mind....
If I don't know any other band that combines growl vocals and clean vocals, means that my knowledge in Death Metal is shallower. But you can't affirm that in general.
But you probably think this way:
"Oh, I know more bands than you, I have more knowledge. I am a better person."
In fact, the first time I heard Opeth was in 2001. Blackwater Park. I hated it, because I had a prejudice against growl vocals. But years after I tried again. It was hard, but now I love the band. And it is the only band with growls I can listen to.
I tried Morbid Angel, but it's boring. I think Opeth is the only band with growl vocals I like.
Opeth isn't death metal...