In the older post, he proposed a very streamlined, polished EDC and first line gear setup. It's very similar to what I run on a daily basis, and what I would choose for my defense when the progressive zombies get hungry. It's not intended and a do-all, be all kit. It's a cohesive, well used and trained with, system of tools.
I do almost all the work on my vehicles. I have a very expansive tool kit with a few spares. Sometimes you need 2 of the exact same wrenches to get a job done, but not 8. This idea carries over to almost every aspect of our lives. Find the need, fill the need. I've said it a million times!
Let's consider the kits in the scenario, John Q Survivalist.
The EDC kits are really straight forward. Same situation, and in my neck of the woods, I'd carry nearly identical items. I also have a car kit that is just to bolster my EDC for a get home situation. My EDC and car kit are fully independent of my fighting loadout. I don't carry plates in my car, it's just not my thing. I also don't carry a mag carrier or micro rig. I just don't see the advantage when I can just as easily use my pockets to dump a couple mags and and not look as alarming as a kitted commando. That might change is things start to erode, but as it is, I'm going to try to remain as low profile and innocuous as possible.
The rest of the kits are perfectly suited, in my opinion. The "Mountain Man" setup is also pretty slick for an all else fails situation. All the guns listed are hunting friendly and legal in every state. My choices would differ slightly. Remmy 870 combo, Marlin bolt action 22 rifle, Ruger GP100 pistol in 357/38. Watching Dave Cantebury's Longhunter series would give you an idea of the tools you need.
The one thing I would mention, and that takes a long time to lose, is knowledge. Remember to invest in yourself and your capabilities. The more you know, the less stuff you will need. The more situational training you have, the less likely you will be ambushed and forced to defend yourself. I can continue to expand on the theory, but you get the idea.
I'm currently preparing for a grueling 7 day course held next week. Learning never ends, it just slows down a bit. Knowledge is power, and you want to be superman!