This is an interesting read but aside from the fact that the answer to this problem just being to use Tor/VPNs, it seems like it doesn't even truly address the problem. From my (albeit limited) understanding of ESNI it just allows for the domain/certificate to be hidden in the connection. This might be useful if you're connecting to a single IP with many different domains pointing to it but even then large ISPs and anyone using Whois could figure out a list of sites you're attempting to access.

You even mentioned this at the bottom of the article with Cloudflare using Dynamic IP addresses (which is definitely good) but this is completely useless if you're not hosting on a large, centralised web hosting company like Cloudflare.

Overall a step in the right direction but nowhere near solves the problem or replaces the existing solution of using Tor/VPNs.