Well, conflating "security" with "following the law" seems odd. Do anyone realistically expect a legally incorporated company to not follow laws? They have to respond to lawful requests, otherwise there will be no business at all.
As long as they fight against unlawful requests, they are what they make out to be. If they're found to be spying on their users when it's not lawfully requested, then you have some bite in your argument. But otherwise, I'm not sure what you expect them to do.
By the way, they seem to be pretty upfront about how they collaborate with law enforcement, at least according to https://protonmail.com/law-enforcement Maybe it wasn't like that in 2021 when the article you linked was published?
In the end, if you rely on any single company for both your security and privacy, you're playing a loosing game. Not hiding your IP when signing up for something when you're planning to do illegal activities? Maybe time to reconsider your opsec strategy.