You do realise there are AI checkers online. https://www.zerogpt.com/ assesses this content as: 27.49% ChatGPT
While this writer obviously had a lot of input into the model, they even state (or more accurately according to zerogpt, ChatGPT wrote this whole paragraph) "The writing process should be highly iterative", so they have added their own flavour into the writing, but it is still, (probably not for much longer) but still obvious when this is used.
You do realize (god I hate that phrase) it’s impossible to definitively classify something as AI- or human-produced?