Oddly, doesn't directly argue there's no cure for loneliness, just outlines the sad extent of loneliness today. I certainly hope there is something that can be done for the situation today.
And unlike the more vocal counterparts of minorities who take to the streets when they feel aggrieved, people with adverse mental health keep suffering in isolation, so it's difficult to make a political issue out of it in the first place.
I think this is kind of a saying among medical professionals, and we probably all agree there is no medical cure for loneliness.