By Kirk Miller No matter how much Gene Simmons protests, rock is certainly not dead. It really depends on how you define “rock.” This week, Billboard announced a revamp of its rock and alternative charts. The updated Top Rock & Alternative Album Chart will now feature “any titles deemed rock, alternative (even if core-pop or core-any other genre) and/or hard rock will be eligible to appear.” And this is good! We now have a country-ish singer-songwriter (Zach Bryan) alongside an alt-leaning pop star (Billie Eilish) and a modern metal band (Motionless in White) on the same list. But at first gla…