Truscape

Grayjay does allow you to use an account only for age gate/content gate authentication, so I wonder if there are any burner or public google accounts that could be repurposed for that (junk because multiple people use them)

The multiple layers of redundancy would likely clash with Adnauseum, yeah. Although that probably is just wasted compute - you may only need one or two of those solutions to have effective adblocking (uBlock for supported browsers, pi.hole for devices unable to have uBlock installed) rather than all 3 at once.

All clicks are performed in an isolated sandbox separate from the user area (basically imagine the click register signal going out, but nothing more).