People are not forced to get a polish passport
OK, you know better than Polish law. You know better than Article 3 of the 2009 Act on Polish Citizenship, which says:
1. A Polish citizen simultaneously holding citizenship of another country has with regard to the Polish Republic the same rights and obligations as a person with Polish citizenship only.
2. A Polish citizen cannot with regard to the authorities of the Republic of Polish claim the benefits of the legal effects of simultaneously held citizenship of another Member State and to the resulting rights and obligations.)
Perhaps you'd like to claim that 2009 was still part of the transition period?
And, OK, you know better than the governments of other countries which still say things such as " It is illegal to enter the EU as an EU citizen with the U.S. passport." (austria.usembassy.gov/passports.html)
There are no problems for legal law abiding visitors in Poland full stop.
Agreed. However, a person who is Polish (whether they consider themself to be Polish or not) and uses documents other than Polish with Polish is very simply breaking Polish law and so is not a law-abiding visitor to Poland.