More pertinently, what happens when your grandma searches for "MS Paint" in the Store, other than needing an account? We all know the store is mostly trash and I have no doubt that people pushing their trash will leap on this chance to flood the search results for relevant keywords.
Grandma will first search paint in the start menu. And then she will open the highlighted entry labelled 'Paint 3D'. Then she will promptly close the abomination that appears on screen after 10 seconds.
