For instance, I buy way more shredded cheese than blocks. It removes an annoying step that creates a dirty utensil that isn't trivial to clean (grater). If I'm making 3 quesadillas a day for picky children to eat at different snack or mealtimes, I don't want to own 3 shredders, nor to have to carefully scrub the cheese off it 3x per day.
I haven't noticed any important difference in the cheese besides saving me like 15 minutes a day of fussing with cheese graters.
I make quesadillas in the microwave. You don't need to grate the cheese; slicing is just as good.
This assumes you're using corn tortillas; I assume flour tortillas don't microwave well.
However, I would recommend grating a block for a couple days worth at a time and keeping it in the fridge in a food storage container. That way you don't need 3 shredders or to spend all your time cleaning shredders every time you want a quesadilla. An electric rotary shredder or a kitchen-aide attachment makes it trivial.
Also, try adding a little canned Red Enchilada sauce to your quesadilla or egg and cheese burritos. It's life changing!
That's just an enchilada. They're good, but they're not quesadillas.
Random example. I buy a meal made by a professional chef and have it delivered. It's more convenient and it's a much better meal than I could make. It's more expensive, sure, but that's not 'in every way'
My exception was to the terms "always" and "in every way".
You mentioned a chef which is less specific but I generally consider restaurant food less healthy than what I'd cook for myself due to differing incentives which is another dimension for convenience
