[nvarsj]

I guess the main advantage of org is Emacs itself - it's infinitely customizable and you can quickly hack automation and workflows. That doesn't exist in anything else as far as I know.

If you just want to get stuff done, then something like Obsidian/Bear is really good. I actually swapped from many years of org-mode/roam to Obsidian myself about 6 months ago. My main reason was mobile integration like you mention. Obsidian sync is actually magic for me, a bit like Dropbox was for files.