Who told you that ?
Spuds are a staple, but rice is more elegant.
That is a myth.Poles are very traditional for one and two the Op is assuming that Poles don't like rice.
They would if they tried several recipes.
The toppings that you pour over rice are the key.
Everything and anything works well to lively it up as simple as butter, salt, pepper, soy sauce, grated cheese, vegetables, or shrimp scampi to beef stir fry or chicken and chicken gravy to cooked red beans, and for fried rice, eggs, diced peppers, broccoli, diced onions, shrimp, beef gravy, curry sauce, red curry sauce, sardines.....it's endless.
But as traditional as Poles are they will stick to their depressing smashed spuds with lots of butter and milk just like babcia made forever.