People who think like this, miss two important points in my opinion:
If you have a dogshit diet it’s not going to be a “happy life full of tasty food” it’s going to be an absolytely miserable existence, filled to the brim with stomach problems, skin problems, awful sleep schedule, variety of diseases and feeling bad in general
You don’t need a nutrient paste to eat healthy - you just need a balanced dier. That means that shouldn’t eat absolute garbage and not “overconsume” anything. Eat veggies, dairy, treat yourself to meat once in a while and you golden. The only actually hard thing it requires is some work - you need to actively seek recipes, spend some time at the store to find good products or even spend some time to find a good local shop that actually sells food and some processed garbage from supermarket, and eat mostly cooked at home stuff.
But for me personally it is worth it. I would much rather eat some backed veggies with a glass of milk and tasty fruits for a dessert in the evening, than go to a dirty cramped place and eat shitty cardboard-like dog food that they serve at McDs