Their CEO donated money to a political party that was not a good party to donate to essentially. A bunch of lemmenites started boycotting and leaving supposedly to Ivpn and others. Now Proton CEO has done something bad and it's time to boycott their giant honeypot. Everyone is always super ready to jump ship and bash.

Mullvad is likely the most reputable VPN provider available. I see no need to switch yet unless they really go AWOL. Proton has always been far more honeypot-ish to me over the years. Though I know heavy organizations that use it, so there is that side of the view as well.