This does stink. It demonstrates some of the rock’n’roll BS that you often see in the tech world. Google seem to have constructed an amalgam with AMP and core web vitals. While on its own, core web vitals does function well to impel improved speeds and better UX, it also drives a lowest common denominator in terms of design and impedes unique creativity. I would be sceptical when I eyeball a site loading promptly on a slow 3.8Mb connection and then being handed a so-so score from Page Speed Insights.