Important line from the article:

That 14kB includes compression — so it could actually be more like ~50kB of uncompressed data

That makes it roughly agree with the advice I remember from the mid-90’s, that your site should be under 40k. (Not reaching that tipping-point was much more important, back when we were almost all on dialup, usually 2400 bps!)

The idea is good and the topic is quite interesting.
It is a bit hard to do so though.