How are you delineating websites and apps, and can you elaborate what exactly your hypothesis is here?
And that you don't ever add website bookmarks to the homescreen, because that makes them similar to apps.
The app guys have normalized the idea that every "bright" idea they get about how to exploit my data or waste my attention, they have a right to push it out to my phone, if I have installed their app.
So the stupid apps keep updating with new shit everyday whether I need it or not.