Imho, notetaking Apps are solving problems that shouldn‘t be solved by them. Encryption / sync should be done by the system via git, Nextcloud, Dropbox, ...
Most of the rest is provided by a decent text editor.
Not really. There must be a small(big?) subset of people who don't want to setup git,nextcloud,dropbox etc. to get encryption/sync working. As a hacker it might offend your sensibilities of "one thing well" but not everyone is a hacker :-)
This is a markdown notes app though, who realistically is the target market besides hackers? The only people I have met who like markdown are programmers.
