Google disables Domain Fronting:
https://www.theverge.com/2018/4/18/17253784/google-domain-fronting-discontinued-signal-tor-vpn
I was always on the fence about DF: 1. no browser support (but does help Tor or apps like Signal), and most importantly 2. reliance on big players like Google or Cloudflare.
Turns out my gut feeling about 2. was right. Centralizing the Internet is not a solution.