Tell us about yourself!
https://photos.google.com/share/AF1QipOsBtrewlcqbKL2z1jhgyjFS48sqAjFHJs6H1ekG1DOcW5qsIgYKWATz0gBAXpXEg?key=eWtMd2lzYmdBZUcyM1ZBa2o4Nk5XajFUdVpNZDNR from where he posted it as https://goo.gl/7MbCa2 on https://plasticbottlecutter.com/faq/ so to me, it sure seems to be his own stuff. I used to work for Google's Leapforce and we were taught how to check things like this out, and I would say everything posted here belongs to him.
https://www.youtube.com/channel/UCSVIljjyIEN8OQ4yhLIYbQA and https://www.youtube.com/channel/UCZM2vsQp6xH1qmDCp8Ucwzg
Probably because he doesn't have to credit his own stuff. That is his page and that is his video.