Of course it's possible to implement these features on top of any system which stores the transactions... but I'm sure you agree that to a user it matters that these things are accessible without writing lots of willy-nilly scripts, and preferable not having to add such meta-tags manually when other sources have already categorized them.

Thus I suspect there's space for more specialized solutions like Ghostfolio. Although I myself would prefer if my accounting system could also do these things. (I'd be interested in these willy-nilly scripts. I also enjoy writing willy-nilly scripts, but time is limited)

EDIT: saw the link you already posted