The second video is just a nonsense troll, if you want good level conversations and skepticism about Helion you'd better check what the fusion subreddit says about it https://old.reddit.com/r/fusion/search/?q=helion&restrict_sr...
Long story short: Helion plans a net-electricity demo in 2024 and to start selling to the grid in 2028. The timeline seems too good to be true but no one says it's impossible. Many says they have not enough publications and that there are many scientific unknowns. Failure is a possibility, success also. Given the timeline we'll know soon.