investigate why WXR is an RSS Profile

[pbiron]

Generating and consuming WXR (i.e., export/import) would be somewhat easier (how much is a matter of opinion) if WXR where a pure WP-defined markup language and not an RSS profile.

It would be helpful knowing the history of why WXR is an RSS profile. Anyone who knows the history of how this came to be all those years ago when WXR 1.0 was introduced, please comment here.

[pbiron]

I suspect the reason has to do with other CMSs (e.g., Drupal) having the ability to import RSS feeds and the thinking was that making WXR an RSS profile would help them. But that's just a guess.