They had a data breach because they weren't careful and they're a bunch of liars that say the government hasn't sent data requests but they have.
I'm a protonvpn unlimited subscriber and I love it because the company has lawyers to fight tooth and nail against legal requests I can't say the same for Nord. The only controversy Proton has had is with Protonmail when an environmental activist used it and proton gave their IP address. There was lots of backlash from this but if you use the internet without a VPN (the activist did not use a VPN), then you should be expecting your IP address to be public, that's how the internet is able to work.
https://thevpn.guru/nordvpn-legal-data-request/https://www.pcmag.com/news/nordvpn-actually-we-do-comply-with-law-enforcement-data-requestshttps://techcrunch.com/2019/10/21/nordvpn-confirms-it-was-hacked/
I'm a proton unlimited subscriber and I love it. Simplelogin, e2ee emails, vpn, all amazing. Their tech support team is awesome and they have always been fast and helpful when assisting me with my computers.