France fines Apple €150M for “excessive” pop-ups that let users reject tracking

Actually Apple were fined because they don't apply the same standard to their own pop-ups that allow users to reject tracking. On Apple popups you seem to need one click, while on 3rd party popups you need to confirm twice.

So the fine seems to be for treating 3rd parties differently from their own stuff.

They could make their own popups require double confirmation instead...

I'm actually okay with the Apple Camera app asking me once and the Domino's Pizza app having to ask me twice. Who are the consumers being harmed here?

You might be ok with it, but the regulators want Apple to treat third parties the same way they treat their own apps, and that's a good thing. Either everyone would generate two prompts, or no one, but excluding yourself is just favoritism.