Interesting, I enjoyed the article.
I'd go with a 2oz plastic groundcloth and a large foam pad cut to my thighs.
I have a 3.6 oz tarp which in the rain is worth it's weight in gold.
All 3 weigh less and function better than a 19 oz foam pad but each to his own.
If there is a storm that is the time to be putting more things in your pack and not taking them out and as Andrew Shurka says, "Nothing is warm when wet" but I like fleece. Oddly enough the best warmth to weight fleece I'm found is by Landsend (inexpensive and 8.8 oz for a medium) very warm when dry.
Each trip is different and you bring what you need to cope with the conditons that you face. Last week in Tuolumne it was 100 degrees and I had sunscreen and was glad I did.
In April I left the sunscreen on the dashboard of my car by mistake and I did not notice hiking in but that night I saw my forearms were roasted like rotisserie chicken so I made sure I had it on the next trip. The mosquitoes were out in droves, I had a bug net to cover my face and in camp my duomid had a screen door and screen floor sewn in which I like much better than an inner net setup, more room and no nets in your face. I suppose I could have rolled in the river mud, when I was 16 on a survial overnight we tried this and it was fun.
You bring what works for you and if it's UL or SUL or dam heavy who cares as long as it's not on my back and everyone has fun and comes back safe - caked in mud or not.
And I always enjoy reading about Ryan's tecniques, not for everyone, I have no use for a hand ax (again when I was 16 in scouts we discovered we could split logs by smashing them with boulders) but I understand why he likes to use it when wood is wet, each man to his own tools. It's fun to push boundries and see what works as long as the weather gods are in a gentle mood.