... I will say that since landDAO has made it clear that they'll only be interested in government registered land... I think they also want to be on the safer side, yea individual might be the original owners of those land but there should be evidence from the government validating that they actually own the lands....
TO be honest, most land in my area is owned by private individuals but normally with the required government agreements singed by lawyers. So, I think what LandDao meant by government registered. It means a court agreement signed by registered law courts and lawyer. As we all know the court and lawyers are part of the Judicial arm of government which settles it. However, LandDao representatives will do in-depth research on the said place and also ask locals around for any hidden information's.