You get used as a pawn in office politics when 2 managers can’t solve problems by talking like grown adults. If you say you’re not going to either of the ‘parties’ you get pressured in to going and told that not going is ‘frowned upon’. A person should feel comfortable with their decision and not be interrogated. Discussing mental health, depending on the manager, can be laughed at, which suggests the manager doesn’t know their own staff very well,