Alfvén was another example of a scientist who got no respect during his lifetime, but turned out to be right while his colleagues were wrong, and a better scientist than them.
Plasma fluid dynamics still does not get anywhere near the respect it deserves. And, Enceladus does not have geysers, it has jets.
People are rarely wrong or right across the entire spectrum. To give a concrete example... He was a center figure in the anti-nuclear movement in Sweden and one of the reasons to oppose fission was because he thought fusion was right around the corner. 50 years later and fusion is still right around the corner.
Any reason, it turns out, was good enough; each reactor not built is one that won't cost another $billion to dismantle.
Fusion, as currently conceived, will never happen, so that's OK. If D-3He or p-B11 ever works, we will need it in the outer solar system, and we will owe him for laying essential groundwork.
Plasma fluid dynamics still does not get anywhere near the respect it deserves. And, Enceladus does not have geysers, it has jets.
I say this not as a plasma fluid physicist.