Does anyone know why there’s no desire to see a working standard (protocol) for calendar/tasks?
It’s clear that CalDAV doesn’t function consistently across devices (and does seem to be dying as a standard). If you work across different devices/OS it’s virtually impossible to get things set up seamlessly. Companies and developers of task apps seem happy to create silos and not look at interoperability.
If you want to self-host, it’s too hard to do this and you really are limited to a tiny number of options.
BusyCal as a macOS client and baikal as a server.
Those two are reliable as can be. BusyCal is a great app with a responsive developer and can connect to virtually anything.
As to the topic of this post, despite the above, I’m trying to move away from CalDAV and CardDAV, the latter has poor support on most mobile platforms in the way I want to use it. I also am trying to reduce self hosted platforms I maintain, which is currently a high number.