Because of non-scientific ideologues. If all the pro-nuke people sabotaged solar rollouts would you say that solar was less viable, or would you blame the sabotage?
GreenPeace, for example, has been lying about nuclear power forever. All the radiation grifters on Youtube who talk about scintillations per m^3 of seawater as proof that Fukushima is killing Californians, etc.
"Concerned citizens" who demand endless studies about things we already have a good understanding of.
People who ignore the 10,000 deaths per week worldwide because of coal power but focus on the ~2 deaths from Fukushima.