Some of us who received the app updates are on 13.4 so your hypothesis is busted dude.
No, not at all. 13.5 has caused the issue because of the tracking. People on 13.4 will get updates because of the problem, but they won't get tracked by the layers in the 13.5 API. It is a mess, but if you're happy with that, that's fine ... good for you.