Exactly this. After close to two decades building for the platform, the mindset is really to be cautious and make sure everything is rock solid before shipping.
This has more to do with building up a quality tool chain and testing process than being slow.
But sometimes there is a need to ship over the air updates, and for that (on Kotlin) there is Zipline [0] from Cashapp. I haven't used it in anger yet, but I know some people who do and trust it.