I love Obsidian and I use it a lot. I take my university notes with Obsidian and I want to share a link in my friend who want to study the notes of the class and I can’t. But in any other app you can for example notion, Google docs etc.
Also I don’t want to publish all my vault, I want to send just a note. To export with pdf isn’t a good way because I can’t do it from mobile and isn’t updated.
For premium user, you could create a feature where you can share with link your note and manage the access. For example I have the note math 1 and I want to share it in my friend.
I press the share button, link goes to my clipboard, I go to the messaging app I want and I share it to my friend. The URL have the format for example obsidian.md/notes/username/unique-id
My friend open the link and Obsidian in reader mode opens. We can only read the doc and do nothing.