Sure looks like someone following the “rule of 20%”, which is just a really, really good way to get your ass sued off.
https://www.copyright.gov/help/faq/faq-fairuse.html
" How much do I have to change in order to claim copyright in someone else’s work?
Only the owner of copyright in a work has the right to prepare, or to authorize someone else to create, a new version of that work. Accordingly, you cannot claim copyright to another’s work, no matter how much you change it, unless you have the owner’s consent."
