Those videos clearly show some android phones reloading games while ios does not.On the other hand, be wary of following the blind.
Many don't understand basic concepts such as iOS apps getting suspended in the background and killed from memory after 3 minutes unless they employ app state suspension to and restore from storage. That's why those fast app switching benchmarks are meaningless.
For those more familiar with Mac, iOS is minimal like System 6 which can even run well on a watch vs full featured MacOS/Windows/Linux/Android.
I guess apple prioritized what should and what should not run in the background.
Lets face it, most people dont torrent on their phones.