Do you suggest that Johhny who reads such instructions is a bad boy?
It suggests that he doesn't know how to cook without following instuctions.
Instructions on a packet food I might add.
Most of us learnt to cook by either being shown or from written recipes.
Sometimes it worked, sometimes it failed.
But in the end we learnt how to cook.
I only use timings as a rough guideline and NEVER measure ingredients.
I go with the flow, check on how my dish is cooking and taste at intervals (though that sometimes kills my appetite. .... :-( )
Cooking is an art.