IANAL, but it seems to me a problem only within Poland. Foreigners probably do not have personal rights, that citizens of Poland are granted. And Polish citizens cannot enforce their personal rights outside of Poland.

So it seems, only Polish coders need to be careful that when they use FOSS software, that they don't impinge upon the personal rights of any other Polish citizen who contributed code. I guess, to be on the safe side, they can decide to never impinge upon anyone's personal rights.