I was mostly referring to “delegate to smart people”. My today’s self preparing a tuna sandwich for tomorrow probably isn’t smarter than my tomorrow’s self eating the sandwich ;). So, the “low priority” = “delegate to smart people” doesn’t make sense to me, and I suspect is not what you meant. If anything, I would want to delegate the “scientific method” stuff to people smarter than me.
These terms are relative. Low priority doesn't mean not important or even not difficult. As an executive I delegate parts of the scientific method to my team when analyzing Type 1 decisions however the final go/no-go decision is squarely on me and I have to answer to my share holders and my employees if I get it wrong. You should never ever delegate blame.
Type 2 simply means low consequence, again relative. Because everyones appetite for consequence is different. For example a Type 2 decision for me is Health Care. I delegate to my spouse to pick the plan. If a bad decision is made worse case is my out of pocket is higher than I would like but it can be remedied in 12 months. It's an important decision and difficult one but for me personally it's a Type 2. For someone else that might be a Type 1 and they must really pick the right plan.
So apply the advise to your life in the way that makes the most sense. And for me personally what I eat for lunch is always a Type 1 ;)