[tlavoie]

Is it perhaps time to return to using external tools such as Privoxy, Pi-Hole and the like? Privoxy appears to still be around, and (I think) was originally at the forefront of user-managed web controls.

Once the browser reaches its natural Borg-self, transparent user-level tools will be all that provide a semblance of control. Well that, and Firefox.

[michaelt]

If a website shows a popover ad, it might be a first-party script putting up a modal, then a third-party iframe with the ad inside that modal.

Blocking at the network layer will leave the iframe blank, but the modal will still be present. It's not such a good user experience, especially for less savvy users who might be confused by a mysterious blank modal.

[AsyncAwait]

Tools such as Pi-Hole cannot block YouTube ads effectively.

[tgragnato]

AFAIK Privoxy isn't actively maintained.

[18pfsmt]

I think you are correct, and that may be an opportunity.

[vetinari]

That's what the DNS-over-HTTPS is about - so your local DNS won't be consulted, instead it will be drowned in the HTTPS traffic. Remember, SNI is going to be encrypted too, so your router cannot distinguish DNS and regular traffic.