I mean it’s not like a VPN is providing major anonymity. We already know all the major providers are tapped. You should treat any VPN like a spy agency.

If you need anonymity, a free VPN is probably not the best place to look.

Also they could correlate your network traffic without you logging in. That is not a requirement. No matter what, any VPN is going to give some kind of unique user identifier.

I didn’t watch the video but you can use DNS over HTTPS in Firefox to accomplish the same thing. It’s just a setting.

Though you’ll only be protected in Firefox.