Answer: Security
Android devices: Vastly less secure. Why?
1) Devices are rarely capable of installing Android OS updates. Google's Project Treble is supposed to solve that and... Where is it?
2) Massive malware is constantly being discovered in the Google Play Store, despite Google's claims to be vetting all apps. Millions of infected devices are reported typically on a weekly basis.
3) Anyone can jailbreak any Android device. So long US constitutional rights to privacy and freedom from self-incrimination.
Thus the blessed, but never perfect, Apple iOS Walled Garden. I'll keep mine, for my purposes. You keep your public weed plot for your's.
And: Knowing rodents are capable of getting loose in Apple's walled-garden does not please me in the least. Thankfully, I've been using massive, ungainly, random passwords for years. IOW: There are still no rats in my garden. *grin*