I can see where you're coming from, but I still feel like you might be putting too much trust into how apple splits their revenue in documents as they're provided to the public.
I'm not saying that the numbers are false, but apple can ultimately freely choose how to categorize their revenue itself.
From my point of view, their advertising revenue inherently cannot be split from their app store revenue.
It's akin to me saying "I've only spent $50 on groceries yesterday", but omit that the actual cost was $100 because of added fees and taxes.
It's still technically correct, and a bookkeeper will categorize it as such, but it also incredibly misleading.
I hold that opinion because in the apple ecosystem, the customer journey doesn't end with the advertisement. Every successful capture inevitably ends with more revenue via their 30% cut.
And btw, I'm technically a shareholder too - though only in the low thousands (value, not #), so prolly a lot less then you ( • ‿ • )