I cant remember when it was released, I had access to TestFlight for a good while for being the supporter. But honestly, its great. I was amazed that plugins just sync between desktop and mobile.
You dont. I use iCloud to sync between my devices and its free. I donated to Obsidian team regardless because they created amazing piece of software but just pointing it out that you dont have to for it to work.
What do you mean by lack of mobile support? Mobile app had been working fine for me since its been released, at least for me. I only use it to access previously written stuff or quickly capture something to be properly edited later on my laptop though. So I’m not exactly power mobile user.