It's one of those posts where I feel unqualified to judge if am facing brilliance or a mount Everest sized pile of hubris.
In this environment it's hard not to see all of this as snake oil.
Helion in particular was founded by respectable scientists who have a background in plasma physics, and they've developed their idea pretty quietly for the last 10 years, only de-stealthing this summer (presumably after reaching a key milestone). What they're trying to do is difficult, but I wouldn't say it's snake oil.