That's quite a claim. Didn't see any sort of links to evidence though.
That's the paper link:
https://drive.google.com/file/d/0B59AisMv54waZXRhbE9GV2NDQUE/viewNothing new here on my opinion compared to what we already had for years in Monero research lab papers:
https://lab.getmonero.org/I didn't read all of this "Empirical Analysis" paper and I don't intend to, but all the bold claims there are known for years (Edit:
and possible solutions too). It seems to me like pure FUD.