I'm glad that I migrated from Evernote to Joplin a couple of years ago, but there are some things where Obsidian excels, and I don't mean the features, but data portability:
Why I'm leaving Joplin (for now):
Issue No. 1 is more or less solved by the export option "Markdown and Front Matter". Issues 2 and 3 are linked to fundamental design decisions and probably will never change. Obsidian is poor when it comes to built-in syncing options, but it operates on an entirely transparent data structure, namely directory trees with Markdown and resource files in them.
Maybe it would help if the "giant folder" full of attachments accessible in "Tools/Note Attachments" could at least include the original file names which are embedded in the Markdown links of the respective notes.
In terms of features and usability I couldn't think of a better software for note-taking than Joplin.