However, electric guitarists are placebo addicts and if 4 nice men spent a 20 minute internet video agreeing on something one of the bearded guys from ZZ Top maybe once said, some guitarists will play along with a little bit more ease in their hearts.
I like him for the storytelling. He reminds me of my primary school teacher, fond memories, who always turned any subject into personal anecdotes, gently opinionated, slightly inflated and imaginative. Rick's generation perhaps among the last who grew up on low bandwidth media and loads of storytelling all day long among everyone.
His music theory approach is useless. It's just a checklist of terms that fit into his particular grid that day. No one wrote any worthwhile pop or rock songs with theoretic emphasis, ever.
https://fairapps.net are also hosting an instance, I've used it for HackerCMS scratchpads and stuff, not sure how up to date all the apps are though