[kijin]

Yeah, the problem with "just use feature detection" is that most of it only works on the frontend, or by having the frontend send additional data to the server after the initial page load.

Sometimes you need to optimize things for certain browsers or bots before a single byte of JS has been sent, relying only on the first few request headers. Akamai probably needs to.

Deleting the cruft but retaining the highest bits (product name and major version) like Chrome is doing seems like a reasonable compromise.