People can choose their own religion - be it self-chopped onions or ironed socks.
doesn't take a minute is a relative judgement based on the skill of the person, equipment available, portion required and how urgent the need actually is.
Microwave rice: saved my sanity (and DD's diet) when I had unputdownable colicky baby DS. Real rice might only take ten minutes - but it involves boiling water, and then washing up. It is also a perfect portion for an adult and a toddler.
Pre-grated cheese - good for small portions.
Pre-chopped meat - saves on washing up (which on a busy day can be the difference between being able to do a home cooked meal or not)
Cake mixes: the bakers in this family are generally aged below 5. They can make a 'real' cake, so long as I pull out the scales and the packets for them, and take the time to coach them on accurate measuring, use the hand mixer to whip up the pre-softened butter and then scrub down flour from every surface. Or, they can use a packet, read the instructions on the back (helped with the pictures), and quite competently decant the mix in a bowl and add the single egg plus 1 teaspoon of water, or whatever. It's obviously not for the domestic goddess with her colour coded kitchen aid mixer - but 'pointless' it certainly isn't.
Similarly, DD loves cooking hates chopping onions. I guess there are plenty of elderly people who can't chop onions. Pre-chopped onions open up a world of stews, sauces and casseroles (esp. Combined with slow cooker).