hello99, I hate to disagree but that doesn’t sound right to me. Take fruits for example. The halacha is that you must wash your hands to eat if the fruit is wet. So does this halacha cause people to wash, sit down, and make a meal of fruits? Or even restrict ourselves to eating fruit at mealtimes? No, we dry the fruit or eat it without washing it to avoid the requirement. But if we had to wash for dry fruit too, you can be sure the answer would be different.
With pizza there is no way around it. Making it into a meal most times is a direct result of the requirement to wash and make hamotzi, not a cause for the psak. The proof is that those who are not chayyiv in mitzvos will eat pizza for snack as often as not.
Sorry for the comparison, I know it wasn’t apples to apples 🙂