I think it's sus that a Math Lecturer decides to post an article about philosophy and then doesn't describe any of the steps he took. The article basically just says i did a thing, but doesnt explain what he did/how to reproduce the result... On the other hand, philosophy is a field with many wrong conclusions and the like, so it is believable. But again in my eyes it's not proven, since it's just 'one guy' saying something and not replicated nor reproduced.

Edit after replied comment edit: The second article you linked (actually the first in the post) changes my believe about the dunning-kruger effect. Thank you for sharing!