Your logical fallacy: Dismissal by referring to general facts that don’t necessarily pertain to a particular individual. You don’t know anything about his age-related cognitive decline, i.e. if there even is any. Some people get it relatively young, some relatively (and absolutely) older.
on the other hand, the older i get, the less patience i have... with checking out facts, with stupidity, with LOTS of things (it becomes a waste of what is becoming a more and more precious resource - my time). In hersh's case, he has been immersed in the muck for so long, it's become his frame of reference. and if something reverberates he trusts his "instincts". maybe rightfully so, maybe wrongully so - nobody but an insider with the facts really knows. and we as outsiders have to decide on a purely subjective basis if to believe him or not.
(sorry for being so long winded - it comes with the age)
