The overriding logic aggregators are forced to follow is to optimize for engagement.

If you don't, the competitor that does will suck up all your oxygen and you'll asphyxiate.

It is inescapable for aggregators.

The internal logic that all employees will bend to is engagement.

"We'll optimize for what users want to want, not what they want" sounds nice but is nearly impossible in practice for an aggregator.

For a given change, it's hard to tell if it's good for users ("who are we to say?") but it's easy to say "this improved 1DA by 2%".

The latter is legible and obvious and will get selected for in the organization.