"It's a sign of severe depression and loneliness when managers use a company as a some sort of way for providing paid for friends.
I am surprised workers don't feel being abused by this behaviour, because in reality they become nothing more but escorts.
If people go to pub for a drink with their work colleagues, that is an extreme red flag."
100% in agreement with the first two paragraphs. But the last one? No that statement is something of a "red flag" in itself. It's one thing to value your own privacy, and respect others', but you can't be completely antisocial. I've worked at a couple of companies that organised "pub evenings" and the occasional weekend getaway and they were always fun - because no-one forced anything on anyone.
And of course there is always the Christmas party when at least one (ahem, non-)couple end up "hooking up" for a quickie in the bushes. But I think that's a separate discussion.