This is reducing the role of Design as some lego-blocks assembling process. And higher quality being seen as adding ‘pizzazz’.
You are right, though. Many products don’t need more than that. But I fear that this will greatly impact design innovation and progress. We might get stuck in the current UI paradigm for a long time.
Is "design innovation" a thing we really need? I'm not trying to be flippant, but every time I've come across an "innovative" design the only thing it's done is made me spend time learning whatever bespoke conventions the designer put in.
It's no different to people trying to reduce the role of Programming to the same lego-block assembling process. And I believe the same conclusion follows.
We can skip Web3... Web 4.0 is twilight gradients, glassmorphism, text size xs in tailwind, and cards and pills for every UI component. Along with self-explanatory help text acting as filler under every header.