The problem with having, as you would advocate, "Open and honest debate is usually supported by reasoning and informed factual reponses. " is that in this case this isn't someone asking a question with a view to finding others' opinions or just educating themselves about some part of the aircraft industry. It's someone with a clearly defined agenda and position (albeit a position that appears to shift depending upon the nature of the debate).
In short, it's about as valuable as trying to have a discussion about economics with a career politician.
There are claims that commercial aircraft do the spraying, and that its done by secret aircraft; that the spray is through the static wicks, or the engines, or somewhere else.
Oh and a lot of psuedo-psychology that claims that anyone questioning the believers' worldview is conditioned to be unquestioning robots of this all-powerful world state (or whatever is behind this).
Oh, and cloud-people from Saturn. Mustn't forget them.
In other words, the problem isn't the responses to the thread; the problem is that the thread BELONGS in JB.