What’s more far ahead than an ecosystem that you can’t leave without replacing all devices because they work poorly with anything other than Apple. If you don’t like all their products or Apple makes changes that you disagree with then sucks to be you, I guess.

No impact on regular web development. Firefox and some other browsers already block third-party cookies by default.

I’m curious why you would trust Apple and not the others you have listed. All of them will do literally anything to just earn more money and exploit you as much as possible.