It’s nice to see one of these providers upgrading their protocols away from openvpn and the like, but it still doesn’t solve the problem of these commercial VPN’s are still just someone else’s computer.
If what you care about is encrypting traffic, then set up WG yourself and have a free tier / $3/m machine do the relay. Or your router. It's so easy there's really no excuse not to.
If what you care about is anonymizing your traffic, then you need someone else's computer. That's the idea, to mix your traffic in with a bunch of other traffic.
It is really nice, OpenVPN is good, but it is definitely harder to configure, and slower. I also like that it is hard to shoot yourself in the foot with Wireguard given it is really hard to mess up and create an insecure config.
ProtonVPN is also at least a bit better than other commercial VPNs, specifically the "Secure Core" feature is quite good. Proton is one of only like two or three companies I actually trust when it comes to their security and honesty.
I think the point is that public VPNs don't provide much additional security. Basically they just let you act from a different location on the internet. Is your traffic safer egressing on to the public network from your current location, or from the VPN's location? In some cases the VPN may be better. In others, your local network makes more sense.
If what you care about is anonymizing your traffic, then you need someone else's computer. That's the idea, to mix your traffic in with a bunch of other traffic.