Maybe because of my background, but I’ve never had an issue standing up or maintaining a Nextcloud instance. Especially since the AIO release. Hell, I was shocked how easy it was to migrate.
I’m not saying it’s the best software, but it’s always just worked. I’ve been using it since I dropped own cloud for the nextcloud fork. What common issues are people having with the infrastructure?
I think what you’ll find is HomeKit’s best feature is being a front end for home assistant. Which is where most people end up on their journey.