> it's just a (premature) optimization and thus its removal results in a reasonable fallback, which is simply not using that particular optimization this is a

> it's just a (premature) optimization and thus its removal results in a reasonable fallback, which is simply not using that particular optimization this is a salient point. if it's just an optimization and not implementing it (or removal) doesn't change behavior of sites that have adopted it, then it's benign.