Re: privacy: by not having lying DNS or no NXDOMAIN, there is also less tracking (say, fingerprinting in ad web pages).
And in the ISP's case, you're assuming they already do DPI, otherwise they now see IPs, which might not mean much in the CDN case. But if they do DPI, it will be resolved once ESNI starts being deployed.
What if ISPs block requests with eSNI for all users, in order to be able to remain compliant with legal intercept legislation (e.g. warrant for suspected child porn investigation)?
There are conflicting desires with trade-offs, and all Mozilla is doing here is escalating the war, rather than trying to reach agreement with the rest of the industry on how to satisfy two different requirements.
Switching from a technical measure of privacy (no data being shared) to hope isn't the right way to go.
> But if they do DPI, it will be resolved once ESNI starts being deployed.
Once.
> Once.
This underestimates DPI vendors. eSNI can't stop them, they will just move to exploit side channel information (traffic patterns) to identify which websites you are visiting. People need to remember, that DPI industry has been fighting with obfuscation for years, it's a war where Cloudflare and Mozilla are compete newbies.