It's kind of like white people taco night. Crunchy shells, Ortega mix, ground beef, cheddar cheese from the grocery store (sing along if you know it). True Mexican chefs are like, what are you doing you crazy white people. Do I make fun of white people taco night? Absolutely. Do I mind if I'm invited some places and white people taco night is on the menu? Not even a little bit, in fact, I'm thrilled. Let's crunch away.
Italian Americans and jar sauce... it's a whole thing. Just a bunch of contempt, they start waxing melodic about "ma's gravy" or some such. They can't comprehend that a jar of Prego, box of spaghetti, and some Kraft Parmesan is about as good as a struggle meal gets for some of us. And if we happen to have some frozen meatballs or chicken fingers to throw in, my goodness, we feast as kings.
Although I do know many Italian Americans that claim the Rao brand sauce as the most "legitimate" jar sauce. If you have to get your sauce from a jar, and don't have time for the whole crushed tomatoes and let it sit and refrigerate overnight a couple nights before eating it, make your own pasta and meatballs thing, it's passable.