ProtonVPN has a large history of being connected to TesoNet, a company providing among other things data mining(!). An extra cherry on top of that is the CEO of TesoNet also being the CEO of CloudVPN, which more or less controls NordVPN.
Now that doesn't mean ProtonVPN is automatically compromised but I feel with stuff like no-log VPNs one should always err on the side of caution.
Now that doesn't mean ProtonVPN is automatically compromised but I feel with stuff like no-log VPNs one should always err on the side of caution.