Nyxt seems amazing, but it's hard for me to imagine using a browser without Ublock Origin. I understand that it doesn't really make sense for everyone to support webextensions, and it's a huge amount of extra work, but it's just a huge barrier to adoption. It's hard to trust the smaller browsers to keep me private online if there isn't something that gives me that same level of control over blocking. And there's a hu…
It makes a lot more sense to ad block system wide than to expect every bit of software you use to implement extensions to allow you to do it. There are plenty of services like AdGuard and Lockdown, they can use the same lists that ublock uses, and you protect not just your browser but your email and everything else you use. Some routers will let you do something similar, and you can add a pihole to your network if yo…
To get to the point where I would feel comfortable having my OS handle browser blocking, a reasonable chunk web browser functionality would need to be moved out of the browser and onto the OS. I just don't see that happening any time soon, and I'm not sure that's the direction we would want to move with browsers anyway.
Ublock Origin will do things like stub Javascript methods on the page. A Piihole can't do that. And even for simple things like blocking requests based on the current domain -- the movement towards DoH and SNI are going to make that harder and harder as time progresses. You really need an interface that has insight into not just what requests you're making, but where/why you're making them.
Not to say that system wide blockers don't have value, but they're really there for the apps that can't handle their own adblocking. They're a defense in depth for the requests that slip through other parts of your setup, but they're not a good replacement for a browser extension.