I'm sure 99% of Apple users would be happy with a popup on first use of Safari that asked "would you like to block adverts?". It would be no skin off Apple's nose.

Even if they end up being blocked by many ad funded sites?

I never cared about what that website had to say that much in the first place. If the entire web gets killed because of this, I'll go read a book.

We'll just block their blocking attempts.

If the adblockers win this cat&mouse game and publishers go broke, everyone looses.

Their app ecosystem would implode as nobody would develop or maintain their ad supported apps anymore.

Does Apple care?

They already essentially killed off "ad supported apps" with App Tracking Transparency, and Apple doesn't earn anything from ads anyway (as opposed to paid apps where they take a cut).

Yeah, for now. I'm doing my part to change that. People love the fact uBlock Origin blocks the idiotic YouTube ads. There's always Brave if for some reason they can't stand Firefox.

And hey, if Apple will crack down on Facebook's espionage over privacy concerns, who says they won't do the same to these advertisers and their abusive surveillance capitalism? Maybe they'll realize that advertising is pure noise nobody cares about and block all ads in order to improve usability. Maybe one day they'll get pissed they aren't getting their fair 30% share of advertiser revenue and block them out of spite. Maybe they'll wake up one day and simply decide to kill the ads industry. Now that's a delusion worth having.

Apple's privacy stance is questionable (see the recent content scanning debacle).

Plus, I would say they profit more when the web experience on their devices is inferior to apps, which means annoying ads and popups help drive people to use apps, which Apple profits from... (and some companies, like Reddit, actively participate in annoying their own users to get the app).