"law enforcement can only receive information not already accessible to the standard user" = LE asking FTDNA for your DNA specifically "law enforcement matchin

"law enforcement can only receive information not already accessible to the standard user" = LE asking FTDNA for your DNA specifically "law enforcement matching" = LE uploading suspect DNA to the service and looking for family members, who they will then contact for further investigation of relatives, which does not require a warrant. due to a recent policy change, LE is obligated to identify itself as such before performing the latter type of search. you can ask FTDNA to exclude your information when a LE account looks for family matches.