This has many problems, I found some reading through the article, maybe there are more.
First one is:
and when the funds are needed, the satellite will communicate with a base station on Earth, via a secure link.
There's your vulnerability.
Second one is in the article straight away: social engineering and/or inside jobs.
Third problem:
“The customer’s premises [are] equipped with small antenna—pointing directly to space,”
So this is how you make communication... But where are the funds for these antennas?
Maybe they come from the fourth problem:
Billions of digital coins were minted before the coin’s launch and put away to be distributed as a reward to solar power users over the next 40 years
A premine in hands of the devs... Where have we seen this...
I don't think their main plan will have much success.