Good find! We’ve noticed the same things with some other apps.
It’s part of the reason we’ve launched a free website name AppNavigator that shows historical data for apps on the App Store as well as a breakdown of how long users have used the app before leaving a review:
As you can see above, almost half of all reviews were left in the first hour of the app. I tried the app myself because I was curious and sure enough, features were locked until I started a live chat session where the asked for a review.
