What I like about this is it takes 5 minutes to make the dough the night before and then 2 hours after I wake up I can have fresh hot bread with just about 10 minutes of active time (fold dough, rest, make boule, rest, put in oven, wait, remove lid, wait, done).
Pasta is an exception I allow to my rule, though I eat it probably only once a month now.
In general, it's a very good rule to stick to. This way you are in control and what you're eating at all times.
Boxed dried pasta also isn't inherently unhealthy.
Clearly GP's rule is a little extreme :)
It's 30% the recommended salt in a single teaspoon. That's like a big pinch of kosher salt. So really, it's like 3-5% per serving because I get 6-8 servings out of my dishes. right.