At a more abstract level this is really a conversation around the nature of what is 'private' information online and what is not.
As a society we have reached a reasonably common agreement about how these things play out in the physical world.
For example any stranger on the street can see you go into your doctors waiting room and even sit down next to you in the waiting room if they wish.
This is accepted public behaviour in a public space, no one would raise an eyebrow to this.
But if said stranger then sat in and listened to your doctors consultation, that would be considered an outrageous breach of your privacy.
We are still in the process of agreeing as a society where the equivalent virtual boundaries exist.
For me, allowing a complete stranger to inspect all my online content in plain text is just as outrageous as having a stranger sit in on my doctors appointment.
surely the downsides to supporting a MITMA approach far outweigh the benefit of stopping little Jonny searching for boobs.