Everybody has some form of mental health issues: there is no such thing as “normal”.
Where mental health becomes a problem is when it starts to adversely affect relationships, work and/or one’s self-worth.
Yes, some people take the proverbial and use it as an excuse, but that doesn’t mean that the problem is not a real one for the overwhelming majority of sufferers.
Unfortunately, it’s become yet another weapon for the neoliberal billionaires to wield against those they consider inferior.