The first few pages have really familiar frames. Pages 1-3 here seem identical to sections from page 19-24 https://e-hentai.org/g/2092071/b5925fae11/ (guro warning) The last page also has frames from page 4.
Yes, Zobbie is using these scenes from another person's work and I wouldn't complain about that. I enjoy reading it while thinking where he/she get these scenes. It's common that artists are copying/referencing each others work to make it look cool for their own story.