What, specifically, is the “secure browsing” that they offer and how does it improve on HTTP over modern TLS?
Funnelling your traffic through another entity doesn’t magically increase security.
Funnelling your traffic through another entity doesn’t magically increase security.
There is a lot of metadata in packets that can be viewed by any interim hop, like your ISP, workplace IT security, ARP-cache-poisoned coffeeshop router, etc.
Eh, that's not really a thing anymore.
It's all tradeoffs.