benefit of nautilus mime detection warning dialog?

[Marius Andreiana]

Hi,

Regarding 3-year old
http://bugzilla.gnome.org/show_bug.cgi?id=138033

What's the security benefit of this dialog? Preventing gimp from
opening an .sh file renamed to .png? 
Each application should handle bad input, e.g. OOo won't crash the system if one tries to open a non-ODF file with it.

It's affecting quite a lot of users
http://www.google.ro/search?q=%22Cannot+open%22+%22indicates+that+this+file+is+of+type%22&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox

Why cannot be removed?

Thanks,
-- 
Marius Andreiana
http://marius.andreiana.googlepages.com