Actually it allows emulators on the standard Apple AppStore (after review). Ignited is working of submitting. Edit: source right from Apple’s website. This is the review guidelines for all apps on the AppStore, not just Europe. My guess is that they decided to include the emulators to keep control and retain customers in their store instead of them going elsewhere in EU. And they had to make it the same rule all over to keep it consistent.

https://developer.apple.com/app-store/review/guidelines/#third-party-software