I'm not sure what you think is being argued here. Both of the posts you link to say exactly what I said they were: the popularity of the games lead to the series' international success. You repeatedly cited Polish made media as evidence of the series' success which was irrelevant given everyone else was talking about US/international.
The "never leaving Poland" argument was introduced by you
here, not by anyone you are arguing against. You actually introduced something that conflicts with what people were saying. "It's not like it stayed a polish only game"? No shit. No one said it would, and people are pointing to the popularity of the games being the direct cause of the whole series' international popularity.