It must be stupid that I've selected this essay, but I'd still like to find a few more.
I think some articles are beyond my comprehension too, really needs time to digest.
And, btw, each time I read your post, I feel that your English is getting better and better. My Japanese has not reached that level yet.
It seems that "Notoriously" is an adverb.
An adverb could modify adjectives, if I'm not wrong.
"Preening" and "self-admiring" look nouns to me.
So "notoriously" modifies only "opaque"?
I'm sure you know this. In English, it is common to use more than one adjective before a noun. And, we can think of a combination of adjectives that belong to the categories of shape, size, color, age, origin, opinion, material and purpose.
* Pendora is a beautiful, tall, honest, young, Eurasian girl.
* Mr. Smith hurriedly got into the small, blue, broken, stolen car.
* It was gradually soaring downwards and outwards, hoping to land on the greyish rocky, blazing hot, narrow-flat-piece ledge.
Thanks for that, I'm learning too.