The endless stream of poor ratings and angry comments eventually reached a breaking point and Dolphin was removed from the Play store mid 2016. While not everyone had false pretenses as to what should be possible, a lot of users blamed Dolphin for being poorly optimized rather than understanding that it wasn't even meant to run full speed yet. Unfortunately, despite many warnings, many people got their hopes up the moment they saw Dolphin was on the appstore and were ready to play their favorite games, even if their device wasn't. When Dolphin was first uploaded to the Play Store, developers tried to make it absolutely clear games wouldn't be playable, even going as far as calling it 'Dolphin Emulator Alpha'. Users loved the idea of being able to take their favorite GameCube and Wii games on the go, but expectations and reality have never quite aligned.
Dolphin on Android has had a bit of a checkered history since its inception.