[strongpigeon]

> [...] mean it’s specifically for the benefit of a select few sites.

It does seem like the ones who benefit from this are large web application that often ship incremental changes. Which, to be fair are the ones that can use the most help.

This has the potential of moving the needle between: "the app takes 10 seconds to load" to "it loads instantly" for these scenarios. Say what you want about the fact that maybe they should optimize their stuff better, this does give them an easy out.

That being said, yeah this is really convoluted and does seem like a big fingerprinting surface.