We could have said the same thing about facial recognition technology back in 2011 when Android debuted Face Unlock. Here we are, 6+ years later and Apple introduces its Face ID technology which does the same thing. Just give them time, they have a finite number of paid engineers and they're competing against an ever-growing pool of unpaid open source enthusiasts that enjoy working on Android.
The bigger problem for Apple here is users. A huge number of addicts have been asking for a dark mode in iOS for quite some time. If enough people ask for feature X enough number of times, it is hard for a public company like Apple to resist. I mean it is so easy to at tim or at federighi and get such features these days.
