He suggests 1mb, personally I still think it is too much.
> How I, as a developer, make sure my website works everywhere?
1mb for a single page isn't enough?
> What with sites that use a lot of code but still work fast?
It's fast if the resources are near your device (CDN), most websites don't do that at all.
Wether a website wants to be inefficient or has a good reason for having a lot of resources it impacts the speed with which the site loads. The slower the site loads the more users are going to abandon the site. Stats say by 2 seconds most users have abandoned a slow loading site. Caveat that if the user feels the site is really worth the wait, they will wait longer.
So seems everything in this proposal is already addressed...
What about single-page apps where the whole app is "a single page". With this proposal, even lazily loading the extra bits would hit the limit.