Yeah I was torn about responding to this comment. By the employee's own admission, the severance was generous. There is no other option but to use online meetings for this now. So maybe a 1:1 could have been done, but a) that would have taken significantly longer to complete and b) would have resulted in people spreading rumors and employees who were not impacted would have feared for their jobs thus impacting productivity and morale.
We can talk for hours about all the things Uber could certainly could have done differently throughout their history that - maybe, possibly, in a parallel universe - could have prevented this from happening. But they are where they are now, and there's no "good way" to lay off 3,500 people in a situation like this.
Also, to the sibling here - there's simply not enough information to suggest that these employees could not ask questions at all. At least by my read, that's not stated anywhere, and unless explicitly stated otherwise my assumption is that they were provided with the contact information for someone if they had questions - as this is typically how most companies would handle this, particularly at Uber's size.