It's interesting what people expect of Proton Mail. I've used it for a long time but for only one reason really: their revenue stream is my subscription and not ads. I've never even given a second thought to all their encryption claims. Even with Proton Mail if I ever wanted to send a "secret" email I'd wrap the content in my own personal keys.
With respect to IP addresses of email logins, I'm surprised they ever claimed they don't have logs. You've always been able to review the IP of a login through the web UI as far as I remember. Was the idea that that was also supposed to be encrypted?
Personally I'm OK with them complying with court orders, but I understand that "the definition of criminal is state defined" and that poses serious issues. It kinda seems like if you want to do something that could be considered criminal at some point in your life by your country you should consider something other than a 3rd party email provider for those messages. Signal would be a step up in that regard if you still wanted to use a third party.
I imagine the low level form of each model being free indefinitely, possibly ad supported. It's already probably becoming the most consistent "we're pretty sure this is from a human" training data they have.