Firefox on android lets you install most of the available desktop extensions, so you can use your favourite ad blockers

But then you have to suffer using Firefox on Android.

There's nothing wrong with it, I've been using it for ages.

Well, once a webpage has played audio there's a notification that hangs around till you restart the phone. That's probably better than the cost of running Chrome, though.

You don't have to restart your phone. On Android you can close the app from the recent app list.

Safari supports ad blockers, and they’re quite easy to set up.

Whether or not people actually install them is a good question, though.

I’m using safari + adguard (an app that injects adblock rules into it) and pretty sure that I see no ads. Except on few sites that usually try to push it even through desktop uBO anyway. Even no youtube ads, idk how they do it.