There have been many times that Android phones have copied UI elements that were first introduced on iPhones. I’m not usually that picky about these features since I frequently switch between Android phone brands and have become used to differing approaches.
The exception, however, is when it comes to UI elements that affect the way I use my phone. It’s why I still use navigation buttons on every phone, rather than gestures. Split notifications are another development I’m not fond of — but my most recent device gave me no choice.