kind of an interesting question -- are product nudges ads? like when there's a button to use a paid feature which pops up on top of a different button, is it an ad? it's not third party.
On that basis, I think it falls squarely in the advertising category.
I’m sure someone that works in that industry can drop their knowledge on it.
Put me off non free to air TV for my entire adult life until streaming services became a thing, and you better believe I'm immediately unsubscribing from those the second they pause a video I'm watching to show me promos or ads.