A situation: a person in a project that points out the negative externalities.
The leader of the committee comes to them: "Hey, we've decided for you to not be on the project anymore, you're just making everyone sad!"
Indirect effects are easy to ignore.
Just remove the people who point them out!
Indirect effects will not be proactively noticed by the coordinated collective; they're too hard to point out and get everyone to see at once.
Only individuals can point them out.
Individuals are easy to silence, intentionally or unintentionally.