No. The tanks that don’t utilize their cooldowns are bad players. It’s as simple as that. It has nothing to do with parsers, nor has it ever. The same is said for healers that won’t use their entire toolkit (healing or damage spells), or the DPS that won’t AOE/use their raid buffs or basic job mechanics (e.g., BRDs that won’t use their songs). They’re simply bad players, and the parser is irrelevant here. Don’t conflate the two.