I agree that people are (predictably) going overboard on that train of thought, but I can understand the idea. Follow this analogy:
Let's say you are a young lad and once a week you go to your grandmother's house after school for a visit and dinner. She's a sweet old woman, but a notoriously bad cook. She's made a few great meals in her life, but overall, it's been an ugly experience.
3 weeks ago you went over there and she made you dinner. It smelled good, but after you ate it, you had the ***** for the rest of the week.
2 weeks ago you went over there and she again made you dinner. You asked if maybe you could just order pizza from a reputable place, but she would have nothing of it. This dinner didn't quite smell as good, and while it tasted good at first, you ended up puking.
Last week you went over there and begged her to just order a pizza. So she did, but she ordered from a restaurant that is known to suck and had already been closed twice for health code violations. You ate it begrudingly and shat painful blood for 7 days.
Now it's time to go to grandma's again. You did your homework and wrote down the numbers of a few great, award winning pizza places. They are far away and it's possible they won't deliver to her house, but you gotta at least try to sweet talk them. Tell them you won't use a coupon and you'll tip their driver extra. You beg your sweet grandmother to, for once in her life, ORDER THE GOOD PIZZA!!!
Now she's sitting there at the counter. The ingredients for her latest casserole are out of the fridge. This could be the time she gets the recipe right, but her track record is poor. You have the phone number for the pizza places.
What do you do?
(*And FWIW, I can't believe I just typed all of that out to make a simple, somewhat humorous point. I think I need to spend my lunch break in different ways. Maybe therapy. )