Maybe it's just me, but it feels like this is trying to scare people into thinking that the VPNs mentioned are doing this tracking on the sites you visit while
using their VPN, when it's really only about the VPN's own website (which people usually visit only when they sign up). It doesn't explicitly say the tracking is happening while using the VPNs in question, but I would bet a large portion of readers assume that's what they're saying.
It really doesn't bother me if a VPN company uses trackers and other tools to optimize their own website, other than the fact that some third parties may have good reason to believe that a visitor uses a VPN if the person visited the VPN's website. That says nothing (or very little) about how private you are when actually using the VPN.