For example home owners that do not want a nuclear reactor in their backyard are not likely candidates for troll farms, but huge energy companies (or whomever) are.
As for nuclear NIMBYs, sure, individually they don't have the money (I'm a nuclear YIMBY, and I don't have it either). But there's plenty of organizations with money and influence, campaigning against nuclear - e.g. fossil fuel industry, Greenpeace. So I'm going to back the GP - everyone does that.
It's the vastness of comments that I find as evidence of something wrong, not specific posts.
If you believe all pro-nuclear-energy people are extremist environmental nuts, or all anti-nuclear-energy are anti-science luddites, then you've got a lot of people who are going to be easy to manipulate, since they won't ever entertain any argument from the other side.
This is crucial. I think it makes sense to recognize how, since the invention of speech, there have been those who accrue power by hiring professional trolls.
with the internet comes a lot of freedom and this is part of the price of having it because you can bet there is a politician waiting in the wings who will ask you to let them muzzle someone to protect you all the while another politician may be selling your right to speak.