Apple only does things to progress their own business model. Apple failed at becoming an ad business so they pivoted to subscriptions and app revenue. Now they are building an ad business. Just look at their ad revenue.

That's what the marketing department says.

Ad/tracking blocking is one of the things that can only be trusted if it's open source, i.e. uBlock Origin.

By the way, does this Adblock Engine actually block trackers? Or it just stops the ads from displaying?