I'm thinking something in the same vein as Iceraven, which is a fork of the Android version of Firefox that aims to make the browser more usable for humans instead of servicing the overly restrictive mobile environment/tracking that's bog-standard in most mobile platforms.
I considered Librewolf, but it's willingness to break pages in the name of excessive anti-fingerprinting (the RFP mode breaks a lot of interactables) and ideology (blocking DRM) makes it kind of unacceptable for this purpose. I guess I'm not looking for a privacy fork, just a fork that protects me as a user from anti-features (with widevine in specific not being an anti-feature; I don't like widevine either, but it's kind of necessary for using a browser these days.)