Let’s organize the temporal order a bit. This is what some research turned up.
“Groups of senior employees, concerned with Altman’s leadership and lack of transparency, asked Loopt’s board on two occasions to fire him as C.E.O., according to Hagey.”
“As Mark Jacobstein, an older Loopt employee who was asked by investors to act as Altman’s “babysitter,” later told Keach Hagey, for “The Optimist,” a biography of Altman, “There’s a blurring between ‘I think I can maybe accomplish this thing’ and ‘I have already accomplished this thing’ that in its most toxic form leads to Theranos,” Elizabeth Holmes’s fraudulent startup.”
https://ghostarchive.org/archive/veLhW
I read he’s a vegetarian out of concern for animals, and that’s a good moral sign (but perhaps less relevant here).
Are / were there precursor concerns arising to signal back then? I don’t know.
"Despite potential warning signs, we believe Sam to be an ethical person"
and not
"We know that Sam is an unethical person, but that's either not a problem, or an actual asset when it comes to running our venture fund"
The former is definitely still an error, but it's quite different from the accusation being leveled on this thread.