Agree completely! Fusion has not yet been shown to be commercially viable. LENR (low energy nuclear reactions) has not been shown to be commercially viable and have had the added detriment of having been plagued with a scam artists and charlatans muddying the waters along with the duped pretending that they understand the factors at play and shutting down meaningful conversation.
The real problem is that fusion hasn’t even been shown to be physically possible at scales that won’t blow up large cities. And by this I don’t mean that you can get DT or DD to fuse as isolated events and produce energy. We have been doing those experiments for nigh on a century. The issue is whether you can confine such reactions in a controlled self-sustaining configuration so that producing net energy would even be possible.
What we have learned over the last two decades is a lot of the physics reasons why it is all very very complicated [it’s called plasma instabilities, and related to the problem of trying to get a glass of water not to pour out when you tip it over.