In my experience, the truth usually lies very strongly to one side of the spectrum, and sometimes beyond an extreme (as reasonable people often bend over backwards in giving their version of events, while unreasonable people do not), but you'll never find out for sure.
E.g. in the Techcrunch piece Horvath says that the founder's wife spoke of having spies, and influencing HR decisions, and so on. I can easily imagine the conversation taking place over drinks, and it could be horribly sinister or it could be someone's not-very-well-judged attempt at humor. But this doesn't mean that "the truth is in-between".
Horvath said the founder spoke of having spies, etc.
The founder says she did nothing of the sort, and blah blah blah I would thus expect the truth is "the founder said she kept in touch with goings-on in the company through friends" or something similarly in-between.
Not "The founder has hired spies that prepare detailed daily reports" (which would be very strongly to one side) or "the founder has no idea what goes on in the company, and knows nobody" (which would be to the other).
IMHO, of course. Maybe you have a different view of what it would mean to lean strongly to one side of the spectrum in that situation?
Second, This is somewhat pedantic. The OP simply assumed what whatever Jane said was true, and then went from there.
Your complaint is essentially that i did not add the words "in every case i have been part of, and every one i know about in sufficient independent detail" in front of "always". All told, that's about 43 cases.
Feel free to pretend i did write that, if it suffices.
If not, feel free to disbelieve me!
Her picture proves nothing, after all.
Your conclusion about "how much stock to place" does not follow, since this allegation has not been proven true.
Having been involved in this sort of thing before, both on the "asked to investigate" and "asked to play witness for an employee side", i'd say the truth always lies somewhere in between, and both employers and employees tend to behave badly.