I would not read into it much more than international policy for internal propaganda. They know it's not gonna succeed.
Why do they come up with this right now? Their poll ratings are slipping, following Odra river ecological disaster and huge inflation - and these are only their latest screwups. Many social groups traditionally in favor of PiS are becoming mad at the government. They have their "iron electorate" that will vote them no matter what, but this does not give them majority.