> And I worry about a "chilled" populace too afraid to express morality when it becomes socially inconvenient.

The social cooling effect always existed. It is just, previously, information and reactions traveled way slower. We are just adjusting to the new speed. Culture is a complex emergent product of the various basic human interactions. My guess is that this product doesn't make much sense when reactions travel fast as culture changes very slowly.

So instead, the future will be culture-less. You decide your behavior everyday based on your first few (100) shorts/snaps/tiktoks of the morning. It does help that these snaps disappear by tomorrow. This new society will have no memory.