Tweaking it brings up an important point that's made in debates here on HN about privacy, censorship, etc., in relation to developer ethics. That is, if you are an intelligent and intentional participant in building something, and you're not thinking about second-order effects, the system you're building will still have them.
The intention in making Facebook more "engaging" probably wasn't to have radicalizing isolated communities. But Facebook was intentionally developed toward more engagement, and that was the result. Ask people who worked on the project and they'll almost certainly tell you they had no intention of worsening the situation in Myanmar. But the system that led there was still intentionally created.