It's clever until you hit issues with uptime, or breaking the specific rules of the TLD. I'm also a supporter of Obsidian, but it scares me that the domain is under the whim of the Moldovian government and could get shut down/redirected if someone who uses Obsidian Publish decides to write "bad" stuff about government officials since the TLD doesn't allow that.

> Registration restrictions: Prohibited domain names with bad taste, foul language, injurious to public order or to public sensibilities, with offending character, or with obscene or pornographic words

From https://en.wikipedia.org/wiki/.md