You are right, a couple of conversions (I forget which) are nothing like the original instrument or patch.
Perhaps post a reply/review if you can’t edit the page to get that info across.
Where there are only exs files to go on, loading them into TX16Wx or Directwave seldom went without a hitch.
Once I’d got the KConvert script for Kontakt 5, I was able to load them and save them as nki/nkm. But I had no way of knowing what the creator had actually uploaded unless there was maybe a video demonstrating it. Consequently, I only share when someone raises interest in Kontakt versions in the forum.