I'm a note-taking power nerd who has used all the buzzy apps on Macs. Obsidian is by far the best — it's become my personal journal, my knowledge base, a quick and dirty blog, a place to keep loose notes. The development velocity of the (TWO PERSON!) team behind this app is ridiculous. They're constantly pushing updates, and seem to handle all facets of app development with aplomb. No affiliation, just a happy user!
I had a small problem with the app once. I contacted them via email and it was resolved in a couple of hours and they were kind enough to offer different solutions -- solutions that didn't fill their pockets. (Needless to say, I'm sticking with their services.)
The fact that they can manage all that is almost a testament to how useful the app they're creating must be for them.
I too am just a happy user/customer and wish them nothing but success.