No, if the recipe calls for 10 minutes that’s the recipe.
You can always spice things up by spending 40+ minutes slow cooking onions, but that’s not the recipe as presented. It’s little different than changing the spices for your personal palette, but while you may prefer different steps or different ingredients that doesn’t invalidate faster, simpler, or cheaper recipes.
The premise of this article is that the written recipe is a lie. There's a nebulous, yet "real" recipe which is instructions for onion soup or rogan josh with the flavour and texture it's supposed to have.. the good version.
Yes, and at it’s heart that premise assumes saving time isn’t a valid option. Which is as I am pointing out obviously false.
Presumably, for most of these recipes there are many things that could be improved with more effort somewhere in the process. For example grinding flour is best done directly before you use it, it’s however not something that most people can even notice and takes a lot more effort.
You can always spice things up by spending 40+ minutes slow cooking onions, but that’s not the recipe as presented. It’s little different than changing the spices for your personal palette, but while you may prefer different steps or different ingredients that doesn’t invalidate faster, simpler, or cheaper recipes.