I was reading 15+ Experts Share Their Web Performance Advice for 2018 and it actually has a lot of good advice, but the article doesn’t distinguish between different types of websites, so the advice isn’t applicable across the board. And most of it is for sites built for capitalism. I’d like to explain it from a diverse angle, explaining how each web performance thing affects the web project.
A Best Practice Guide Reducing Website Page Weight compares different historical averages across a decade for page weight. Again, they are talking about the commercial web, because my own experience is very different.