I've read through ALL those sites you listed. All of them. Some of them I tried to join in the past and others I've participated on their conference calls, webinars, etc... Some of them DO have good info, but some the other info they offer on this matter, has holes in it. Like, all over the place.
I always stressed when choosing to go this route. DO YOUR OWN RESEARCH. THINK THINGS THROUGH BEFORE ACTING. YOU'RE RESPONSIBLE FOR YOU.
On the other side of things, I would like to see crypto topple some of the existing systems.