At work we’ve been discussing whether to migrate off our home grown component library to Material UI. I shudder at the thought, personally. However, a compelling reason to use a ubiquitous framework is that the ubiquity means folks intuitively know how to interact with your product.
Like many of us I was born into a deeply customizable Internet, all of my websites were green or red on black. They were a glorious amalgam of fixed width fonts and <blink> tags. With occasional wingdings characters for fun and games and complex <table>/<tr>/<td> tags for really epic layouts. They were l33t, honestly ^_^
But, as time goes on and more and more people use this thing, converging on the one-true-UX feels like a net good thing assuming the fundamentals are right. To some degree the LLM-ization of the Internet is essentially the end game of squashing the personality out of the Internet which bootstrap started.
We’re on the cusp of spoken word being the core UX of computers with a fall back to reading the LLM transcript, neither of which benefits from <blink>
Not that I disagree with you, but I'll also offer a tradeoff.
When people expect to pick up your app intuitively, it can also just mean them using the app absent-mindedly, which can mean them skipping the manual and jumping straight to trying to tie up the support lines. Whereas if your ui asks for a user's full focus up front, yes there are downsides to that but they're also more engaged.