I appreciate that you are curious about the research backing this up. I did not state it to retain the humor within the piece. But you should check out these places for more insight.

https://en.wikipedia.org/wiki/Human_vestigiality

https://www.livescience.com/21513-vestigial-organs.html

https://beyondblindfold.com/10-parts-of-the-human-body-that-will-disappear-in-the-future/

https://bornrealist.com/15-parts-human-body-will-disappear-future/

https://www.businessinsider.in/science/9-useless-body-parts-that-humans-no-longer-need/articleshow/67564589.cms

While you are free to 'think' whatever you want, I do not make stuff up.