I fear you quite misunderstand my point (though I’m sure not from ill-intent - so please don’t strike your comment above).
I’m not disparaging MN as an annotation tool, but simply pointing out some limitations from, IMO, poorly thought out export. MN->DT->TB is OK, assuming you have and want DT. I know you’re a long-term and expert DT user. Again, this isn’t to disparage DT, but in this it’s another purchase ‘just’ to get at MN notes; and like Tinderbo, DT is a deep app that repays investment of time in understanding it, though that’s moot if it’s simply a pass-through medium.
To be open handed, a reason to ‘flatten’ RTF is that RTF-based links can’t (yet!) be accessed as TB links. MN exports a back-ref to the item, by name of the PDF, with the MN pseudo-url as the embedded URL. Does that matter, why not just click the link in the imported TB $Text? Well, ‘No’, not if you wish to store the MN back-ref in a TB attribute.
Yes, there are ways around this. Indeed, I guess I could use Applescript in TB to locate the MN RTF url, place the actual URL in the TB attribute and then delete the otherwise unwanted $Text. But, the user has a difficulty (not through laziness) understanding /reading code and Applescript was a step I was trying to avoid (and has only become an option in v8).
The more I learn about inter-app data triage, the more I hold onto the fact that I’ve acquired niche skills not obvious to a wider audience; obvious/simple is very much a subjective judgment. MN is a really interesting app - were it earlier in my studies I’d probably try and use it even if I’d still face the export issue if I wanted to use the notes in TB. I get that the MN devs may not see (easy) use of data outside their app as a valuable feature. All small devs have less engineering effort than their users can supply with new desired features - and that’s without the make-work of supporting ongoing OS-level changes over time. My earlier point, if obliquely made, is that perhaps they are wrong in assuming a rich export (and in some case also import) mechanism isn’t a key feature to unlocking the value of the app.