As an experienced Internet denizen who has seen dozens of conspiracy theories play out, the person I'm responding to is playing a fool's game and will be shouted down and ignored by everyone who wants a neat little conspiratorial story to go with their morning breakfast. Clear, simple explanations are death to conspiracy theories, so they are ignored and the people who make them are vilified at every turn.
The 'utterly dismissive of the possibility' people are also all over discussions like these, dismissing speculation with arguments that tend to amount to "oh, please!" and "oh, come on!"
In fact, these discussions usually amount to amateur physicists insisting that somewhat unusual phenomena are physically impossible (usually citing retired fire chiefs, their uncle who is a mechanic, and 'common sense'), and a bunch of authoritarians replying with "Oh, please - tinfoil hat!"
There wasn't even a crash and five women burned to death during the time it took to notice the fire, communicate that to the driver, pull over, and open the back door.
