I recently got burned by this "feature" which presents a significant privacy risk to registered TC users.
If you ever include a screenshot in a forum/social media post, then you have to make sure that TC is closed or risk having your real name revealed - perhaps not such a big concern to those with very common names like "John Smith" but if you have a distinctive or unusual one, there is a much higher chance that other viewers could identify your off-line identity.
In my case, it was a screenshot of security software that listed open windows, their titles and window types. All too easy then to overlook TC with its user-betraying window-title.
Another example where this feature could result in user disclosure is with anti-cheat or similar software that scans and reports on window titlebars - Blizzards' Warden
being an early example.
Now there are clearly users here who are quite happy posting under their real name and showing their details to all and sundry. However, the more prudent will be aware of the need to separate their online and off-line (real-life) identities for the simple reason that it prevents Internet trolls and other undesirables from taking their abuse into the real world. In some cases (reporters, civil rights activists) reckless disclose of their real identity could pose a risk to their life or liberty.
As such, I would like to join those calling for the removal of this feature. It offers no benefit for the risks it imposes on users.