this is an article from (imo) one of the best privacy/security tech-blogs out there
it's in German, but you can probably run it through Firefox local translate
https://www.kuketz-blog.de/lineageos-weder-sicher-noch-datenschutzfreundlich-custom-roms-teil4/
From their website:
As online advertising becomes ever more ubiquitous and unsanctioned, AdNauseam works to complete the cycle by automating ad clicks universally and blindly on behalf of its users. Built atop uBlock Origin, AdNauseam quietly clicks on every blocked ad, registering a visit on ad networks' databases. As the collected data gathered shows an omnivorous click-stream, user tracking, targeting and surveillance become futile.
AdNauseam is a free browser extension designed to obfuscate browsing data and protect users from tracking by advertising networks. At the same time, AdNauseam serves as a means of amplifying users' discontent with advertising networks that disregard privacy and facilitate bulk surveillance agendas.
Why not just work on improving Briar?
Maybe CalyxOS would be a better fit then?