Well, I'll give you half credit and half to who_am_i
The prefix poli- is from the Latin as who_am_i stated, it just has a different meaning as stated in the meme. See below:
-poli-, root.
-poli- comes from Latin, where it has the meaning "polish, smooth.'' This meaning is found in such words as: impolite, polish, polite.
Reference - https://www.wordreference.com/definition/-poli-#:~:text=%2Dpoli%2D%20comes%20from%20Latin%2C,%3A%20impolite%2C%20polish%2C%20polite.
This is actually an old joke on a meme site and the most important thing to remember is that IT'S A F**KING MEME SITE! Don't take everything so seriously.