All well and good to say such things, could you point me to a few?
I was using Android as a daily driver for over 6 months and I didn't find anything in the play store that was of sufficient quality. (DAVDroid being the closest to decent, but it ran in the background and didn't do 2-way-sync correctly etc)
FWIW I was using a Samsung Galaxy S8, and that model does not have the ability to be flashed (and I think it doesn't to this day)
I use DAVDroid (now DAVx5) and I have had no issues with it so far, coupled with a NextCloud DAV server. So far it has worked well to sync contact information, calendars and the like (for close to 2 years now)
it would be stupid (and ignorant) of me to claim that it doesn't work for anybody.
I'm glad it works for you, it wasn't a very nice experience for me and it's certainly not comparable to having the OS designed and built for my use-case in mind, but I certainly don't think it's "unworkable" just that Apple provides a superior product in this example.
Apple usually has better integration when they care about something, but in most cases I find their offering lacking or not free enough so Android feels like a better environment at this stage to supplement the functions of the base OS with less restrictions. For example, I really like the fact that I can see the file system on Android, while on iOS it's completely obfuscated from the end user.
