Memes

Pretty much just read this thread and this one

Either OP got baited super hard, or the person they're replying to is a hexbear/lemmygrad user in disguise. Polandball comics stereotype countries, which can sometimes come off as offensive if you ignore the fact that they stereotype all countries (and US states if the comic is making fun of/joking about politics within the US). Trust me when I say that western countries, especially the US and UK, get mocked mercilessly in Polandball comics so it's a bit weird to me to be offended because China or India gets stereotyped. The person OP is replying to is either baiting by calling the comics Nazi memes or they're brain-rotted on hexbear/lemmygrad and think anything that's the slightest bit edgy is automatically nazi-tier.

Edit: additionally, iirc /r/polandball specifically actually has some very, very strict rules about how the comics are made, their content, etc, because they try to walk a line between stereotyping and historical accuracy. The result is that I've actually learned things from polandball comics as a result of a comic referencing a historical event, which then leads me to looking it up to learn more about it.

Edit 2: I just realized that the reason why tankies would hate polandball comics is that they commonly mock Russia, China and North Korea as well.