I am really confused on why this is useful and not any other proper-ish note taking application.
Think about "Why text files won for programming source code." Rich formats like Smalltalk's images are vastly superior as long as you stay within the ecosystem. But plain text is "worse is better" at scale. You get more tools, more interoperability, more of everything. Markdown is the plain text file winner for uncomplicated words. It's somewhat portable between a myriad of tools. When you drop into a "Better" tool l…
I'll bet the answer is similar: Everyone already has a browser open and quite a lot of notes are copy-n-pasted from other tabs. Availability, interoperability, etc.