First, the seat track problem was fixed some time ago via AD. This crash occurred in 1989.
Secondly, this was a C-185 taildragger. That means that, before takeoff, these people had to have taxiied around at a pitch angle of about 20%. If the seat was "between holes" on the trackes, it would have slid on taxi out.
I've no problem with proper suits, but shouldn't there be just a smidgen of evidence to support the new millionaires' claims?