Sure - but the point is that the original commenter is using an extreme as though it was typical or necessary, when it is clearly not.
I have a curry recipe that takes about 3 hours to execute, however it makes about 20 portions which can then be frozen, and reheated. That’s 9 minutes per portion, and reheating it along with some rice from a rice cooker takes 5-6 minutes of attention. I.e. 15 minutes per meal.
My lunch today will be pan fried salmon with crispy skin, a baked potato, and lettuce.
The potato takes at most 2 minutes to scrub and put into a toaster oven. It takes about 2 minutes to rinse and select a few lettuce leaves. The salmon takes about 10 minutes to pin-bone, season, and cook isolaterally. Again, around 15 minutes.
I learned the salmon cooking technique from watching a 10 minute Gordon Ramsay YouTube video. This stuff isn’t rocket science. You don’t have to spend 7 hours a day cooking, but you do have to accumulate learned techniques steadily over time, just like with anything you want to do yourself.