Helion is legitimate and they have a very clever approach, but it definitely still isn't a sure bet that they will succeed.
It'll always be 20 years away until it's here. Will that be in 20 or 200 years, who knows.
How many times have you arrived at the horizon?
It's 20 years away.
You should look again. There are a dozen different approaches that have a good chance of crossing the threshold to commercially viable fusion in the near term, and they are each very well funded.