If anything should be learned from this article is this:

"We need to look at it from two sides: if it’s good for developers and if it’s good for users."

It is a pity this change in thinking required the pressure from Google Pare Rank, but now I see it as something very positive.

Always remember: code is written once, and executed thousands or even millions of times.

No optimization is worse than "premature optimization", and you probably misunderstand what "premature optimization" means anyway.