Filing a DMCA takedown notice for stuff you do not own copyright for is perjury. (Filing one that ignores fair use considerations does not fall under that category, though).
Youtube's Content ID system is not related to DMCA takedowns, though, so there is no legal repercussions to making fallacious claims outside to violating whatever terms of service the system has.
Youtube's Content ID system is not related to DMCA takedowns, though, so there is no legal repercussions to making fallacious claims outside to violating whatever terms of service the system has.