I don’t really have anything to back this up except a nagging feeling that all the marketing, hype, and buzzwords simply aren’t true.

Local ISPs have legal restrictions from the federal down to the local level in terms of how they handle your data. You give them a huge monthly bill. You are their customer. AFAIK VPNs operate without any legal requirements. They can say whatever they want. I flat out don’t believe their marketing about privacy, logging, or otherwise. They can pay youtubers to say whatever they want.

In fact I’d go so far as to say someone is pushing for everyone to get a VPN. By all means access your everything through an unregulated server run by an unknown entity that can do whatever it wants.