1. The VPN is being honest. No tracking. All is well.
2. The VPN is lying, tracking, maybe even reselling your traffic. Fair enough, but they’re not in any more privileged situation than your ISP. They still can’t see inside your TLS connections and whatnot. And you still get the ancillary benefits of:
A. Geographic diversity of IPs;
B. Easy to get a new IP;
C. Security at potentially unsafe access points.
So, worst case, for $80 a year you get some IP flexibility and security at Starbucks. Best case, you also get the whole no-tracking thing.