Let's posit the following using the Socratic Method:

a) I have no direct evidence that 'chemtrails' control the weather, outside a few, admittedly rare, coincidences. (days with lots of contrails often feel more intense on the skin) (thick clouds, plane flies over low, rain pours for a minute, stops, plane flies over low, rain pours for a minute, stops, etc)

b) I have seen direct evidence, which I was able to personally confirm, albeit circumstantially (which would fulfill any preponderance of the evidence test given) that there are people who are actively paid to engage in so-called 'chemtrail' threads, solely post in 'chemtrail' threads during regularly scheduled hours, and clearly have alerts termed for such 'chemtrail' threads that have them respond to such threads within seconds of creation. These 'shills', as they're colloquially known, offer varying levels of insight, from the mundane 'schizo post troll' to detailed insights on the scientific context behind airplane fuel, weather conditions, and contrail formation. The question then becomes; why?