I don't get why you say you're not the 1 that made the silly claim that they're 90's rock bands, and then try and defend it?
fact is if you try and claim that pantera or slayer are rock and roll bands... well .. .lol
also when talking about a band and defining there time period, you define them either by when they started, or finally became popular... metallica was formed damn near in the 70's... saying there a 90's band is just.. well do the math bro.