You can eat whatever you want, The point was these “Flyers” who claim their house is holy because its Sushi Free , or those that claim Gefilte is better than Sushi
There an idea called Comfort foods or tradition, Many people like to eat stuff they remember eating as a kid. For some it could be Gefilte, for others it could be Pizza. If you like eating such foods, good. You should eat them, Just dont claim you are holier because you do or there is something less holy about foods that arent traditional