Hello! R25th here, the creator of this jam and the writer of the screed that you are referring to. I'm going to give you the benefit of the doubt and assume you are acting in good faith and that this is a simple misunderstanding.

I was not talking about the Polish people. I was talking about “polish” (note the lack of capitalization). In game development, polish is used to talk about the process of slowly going over the entire game, making minute changes in order to improve overall game feel. I personally view it as purposefully removing the jagged edges a project gets when made quickly and with emotion. This is why I included it in the list of other game dev stuff to say “Fuck” to (“juice”, game design, etc.). I want projects created in this jam to be very human, created from an emotional place, and polishing the edges out, I feel, removes what should make these projects beautiful. People make games and I want that to shine through here.

So, I have absolutely nothing against the Polish people, rather a game dev concept that I don't think meshes well with what I want produced by this jam (homographs are fun!).