Maybe not the solution you were asking for, but the Nvidia Shield on the stock code has been a fair compromise for me. The ads on the main screen are relatively unobtrusive, and sometimes even vaguely relevant to our viewing preferences. We largely watch Hulu, Prime and YouTube+ (with free access to AppleTV and Netflix, but I haven't set those up yet). For ads, we pretty much only deal with Amazon's new advertising in included Prime content. We'll probably stop viewing that content once the series we're currently watching wraps.

For context, my daily driver phone is LineageOS which is rooted all to heck to smack down intrusive advertising and tracking (Magisk, AdAway, AppManager to disable in-app trackers, uBlock on the browser, etc...), and my home network uses a pihole for DNS and malware blocking. I really hate advertisers.

On the pihole, the Shield is actually only the #3 top offender of blocked requests, behind my wife's work laptop and my kid's Steam rig. The main offender on the Shield was the ESPN app, which I removed because I never really watch sports outside of tye idd division game, which most of the time I meet friends out at the local pub anyway. Otherwise the Shield has been a well behaved appliance.

So it's not the perfect ad-free experience, but its hardly the advertising dystopia of broadcast TV.