Don’t conflate “elementary” in the GP post with “simple.” Elementary in this context just means that the proof does not use tools from complex analysis (i.e. it

Don’t conflate “elementary” in the GP post with “simple.” Elementary in this context just means that the proof does not use tools from complex analysis (i.e. it only uses theorems from real analysis, which is basically freshman calculus on steroids). The elementary proof of the prime number theorem is not easy by any means.