Indeed. To be an Oswald-did-it-ite is to never be willing to examine the evidence. The attitude is, "the WC concluded it, I believe it, and that settles it. Prove me wrong or I win."
The WC concluded that Oswald probably did it
The HSCA concluded that Oswald likely did it.
JAQers/CTers conclude that AnyBodyButOswald did it.
CTers float all sorts of wacko theories and a 'prove-me-wrong' attitude