It went to Twitter. And I think 'investigative reporting' is far too generous of a term as it evokes images of good journalism. This was a click-bait hit piece detailing a bunch of nothing.
What a work culture.
What's wrong with sending emails or messages at 3am ... if you don't expect workers to read and/or respond to the message at that time (as opposed to the next business day)? It just means the messages sits there in the inbox until the next day. So what?
>and denying vacation times is nothing
I see nothing about vacation time. I saw PTO being denied - which may not be the same. Sometimes PTO and Vacation time is tracked differently, the latter being something guaranteed in your employment agreement, and the former being a perk.