@kariboka
Unfortunately when it's used as the primary API rather than as a sidecar thing to drive a feed reader -- particularly when trying to encode important functional information like exactly who an item is intended to be sent to -- this "just display the thing as best you can and let the human make sense of it" idea doesn't really work anymore.
That is, assuming it ever did. I gave feed readers a lot of grace for making best effort back in the day, but the results were often suboptimal!