Personally, I feel that the recommendations of this site adhere to both principals.

There are multiple recommendations of what kinds of items should go in a type of kit for your home, automobile, workplace, etc. that only take into account the item’s effectiveness and durability (not weight) simply because they are meant for a kit that should not be mobile.

Then, there are also recommendations of what you should be putting in your OtterBox/Altoids tin/whatever that take into account both weight and effectiveness. These are the “personal survival kits” or “pocket survival kits” that you can find strewn about the whole forum, and they are extremely effective minimalist kits.

A person who is truly prepared probably will not be debating which type of kit is actually better, since by design they are meant for different things. You have to keep the big picture in mind. The overweight automobile kit is meant for if your automobile breaks down in the middle of nowhere. The overweight home kit is meant for natural disasters that affect your ability to live in or leave your home. These kits are not meant to be mobile, but can be pared down to become mobile kits. The EDC “pocket survival kit” is meant for those times when you do not have another kit on your back to rely on.