I would guess it started with something like this: they serve DNS to prevent DNS leaks when using the VPN. They realize they can use this to block domains, just like a pihole or Cloudflare DNS. They integrate that into their VPN offering.
It's pretty logical once you think about it, but it was a surprise to me too.
"How to set up ad blocking in our app"
Dated May 27, 2021
I would guess it started with something like this: they serve DNS to prevent DNS leaks when using the VPN. They realize they can use this to block domains, just like a pihole or Cloudflare DNS. They integrate that into their VPN offering.
It's pretty logical once you think about it, but it was a surprise to me too.