In the States, we have gravesites undisturbed for decades although you may not be able to read the inscriptions any more!
States are not Poland. Customs differ.
But there are also cemeteries where nothing changes for centuries:
Of course, they are municipally maintained, not by subscription.
Polish municipal taxes are very low compared to Western ones. In such a case, it is more fair when a family takes care of their graves, isn`t it? What is the sense in maintaining a forlorn grave?
My fault for being "provincial".
Don`t be ironic about Polish customs. Just accept them as they are. If you can`t, just leave and never come back.