I think you should reconsider the bold part and instead say you have problems with conspiracy theorists that do what you describe afterwards. If that happens to be everyone that find some conspiracies more likely than not, it still applies... yet it doesn't commit the error of categorically linking finding a conspiracy to be a part of the most likely explanation for a pattern of behavior, to being entirely illogical and unreasonable per definition.
As people have pointed out earlier in the thread, doing this is unreasonable categorical dismissal and characterization. You don't have and will never have the basis to claim what you do. That goes for @
Flavus Aquila too.
I would argue it is certainly not categorically unreasonable to find a conspiracy highly likely. For example, take for example the now-defeated light bulb industry conspiracy where there were a relatively small amount of actors manufacturing light bulbs for certain markets (Europe, US), and instead of the quality of their light bulbs increasing in terms of longevity, they in fact, decreased.
Now, if they have the technology to attempt to one-up each other in longevity quality, and we know this, and that the ones who had the best technology would gain an edge over their competitors, then there are two main options.
1: They were not communicating to make sure of sharing an intent to not only keep things the way they are, but actually increase the planned obsolescence factor of their goods, merely hoping none of their competitors will escalate the competition or simply not reduce the longevity of the products they sell.
2: There is contact among these few industry titans and they agree on how to get the most out of the market for themselves as a collective.
Unless one does not understand humans at all, number 2 is of course clearly more likely. This is a reasonable way to deduce that a conspiracy is the most likely explanation without having hard evidence for the conspiracy existing, because all other conceivable explanations are considerably less likely.