Musing on how a message will be subjectively experienced by users to the point of ruling out explanations based on an assumed subjective reaction, and assuming complex software development outcomes are tied to that specific strategy, is in fact about psychology on multiple levels, despite your protestation to the contrary. Specifically it's armchair psychology that underestimates complexity.

Most of my examples cut against your interpretation rather than in favor of. The 5 second delay was discovered rather than announced, and same with Newpipe breaking, and I don't even agree that the video message had anything to do with a broad principle of always tying communications to user experience. If anything the history is the opposite, rotating through various forms of obstruction all of which nudge user behavior in various ways, perfectly agnostic to any principle of how it gets communicated.