This.
I also read some stuff on Reddit about why Protonmail should shut down rather than comply.
The Lavabit strategy is commendable but I think the damage it would do generally would be tremendous if it happened.
I personally believe Proton is striking the best balance they can in this circumstance.
And then there's the whole "unbreakable encryption" line of marketing β also false.
I wrote about it in 2014:
https://ipsec.pl/protonmail-security-promise.html
Kobeisi did in-depth analysis in 2018: