[TeMPOraL]

> Wrt the second point, this means designers aren't designing to the brief you would give them.

To extend that: note that the very companies that spend most money on UI, that hire the experts and pay them well, that set the trends for entire field of UX - are all companies whose primary business is user abuse - advertising, high engagement, etc. That's what they pay the UI/UX experts to optimize for, and that's what ends up leaking into the wider field - leading astray people who are trying to build things beneficial to their users/customers.