They're not committing perjury. Perjury requires that someone know that what they are saying is factually incorrect at the time they are saying it.
The authors in this matter are not technologically sophisticated enough to understand how either the Kindle Lending or LendInk work(ed). They actually believe that it is promoting piracy. Thus, they are not committing perjury in their DMCA notices.
The authors in this matter are not technologically sophisticated enough to understand how either the Kindle Lending or LendInk work(ed). They actually believe that it is promoting piracy. Thus, they are not committing perjury in their DMCA notices.