But if a band today started going for an 80's sound with reverb-drenched drums (because there was also sample enhacement back then as well, wasn't there? Just not as we know it today) and roomy-sounding guitars, I'm sure everyone would complain about hot bad it sounds.
I'm sure that's our own perception. I grew up listening to 90's and 2000's metal. I think the best tones are Carcass, Death, At the Gates, and old In Flames. I'm sure someone will say those sound super dated as well. But I don't think contemporary metal sounds bad. At least not if you know where to look. Because if you're looking at Trendiphery and Emmure, then yeah, for sure.