"Afraid" after seeing unfettered capitalism cut corners in every way it can, with zero regard for human life.
I am not sure it's fear so much as it is a logical response to the current situation to not want more nuclear in this context when renewables are so much cheaper.
I am not "afraid" of nuclear power, I just think it's a really bad option right now and that its risks, like all other forms of power generation, need to be considered carefully, not dismissed out of hand.