Oh I agree - it looks like it does for all of those reasons. Even for normal me, when using it, I find I like the design language. e.g. When sorting out my tax, it has sections that clearly explain "Does this apply to you" and if it does and you fill it in, then you get a summary on the "master-list" you eventually submit.

Also the only site where clicking on the "more info" section actually clears up any query I had.

I've no doubt there're endless interactions, a/b testing and all the rest that have enabled them to create something that looks so basic. It's just that's such an unfamiliar pattern to engage with. We all "tut-tut" over "dark design" - but there are very few commercial sites that want you to get in, do your task quickly/accurately - and then leave for a year. e.g. Google prides themselves on you finding what you're looking for quickly - but they want you to come back again.