A bit of both, id think.
It would be unhealthily hilarious to see tryhards despair about trying to minmax that cooldown.
and also, i think we have to much freedom in some game aspects, devaluing choices. we have too many people gatekeeping activities through artificial and misaligned parameters.
but since i play a pure dps class in a laid back environment, a cooldown on changing specs talents or similar would hinder me not in the slightest, making my whole argument dishonest and misleading. almost as much as those people saying the difference in simulated performance is a serious issue for more than a minority.