I’ve seen this kind of thought pattern a few times and frankly the way you are thinking doesn’t match reality.

I work on a 1000+ person enterprise software project.

Less than 5% of those 1000+ understand our customers requirements and use cases in any real depth. This is despite trying for years to incentivise developers to have a broader understanding of our business.

Within that core 5% most decisions are driven by the 3-5 people who care about the particular area.

So for a 1000 person+ org you would need to corrupt 3-4 people to drive a hidden agenda.

This is for a project not trying to be secretive in any way.

To relate it back to Twitter you would probably need the right 3-4 people to push hard for content moderators to be hired in San Francisco instead of Bangalore in order to push hard left views.