Cloudflare at least is DNS over HTTPS. They'd have to block all traffic to 1.1.1.1 to prevent you using it, they couldn't selectively block pirate bay.
All US Firefox users, some Linux distros, Cloudflare (and maybe other) VPN users have it by default. You can also enable it on Windows 10/11 or Chrome.
Your router doesn't need to support it, one of the complaints from business/school admins or even just people trying to run pihole network wide is that DoH bypasses network level DNS setup
