Honestly, lack of markdown knowledge has been a major reason I haven't really dived into Obsidian (the other being decision lock and getting lost in the productivitysphere -- I've watch more YT videos and read more articles about how to set things up than I care to think about). I think I'll try to circle back and give it another go.

StillStackinAfterAllTheseYears

Some thoughts on what's worked for me in my first ten days here

There is no lockdown, no proprietary format like what Evernote has. You just have a folder with markdown text files in it and any editor can open it, you can back it up whichever way you want, etc. Obsidian is just a really good editor for markdown text files :)
If you don't fancy obsidian anymore, you can just get any other markdown file editor to edit your notes... 