As bad as this may seem, SMS spoofing is way, way worse. http://www.bbc.co.uk/blogs/watchdog/2010/04/mobile_spoofing.... Nothing has been done about it.
Lines like this one:
"The message was so convincing that the iPhone Anita was using believed it was genuine and listed it directly underneath the real message from that bank."
Show a complete misunderstanding of how SMS works. SMS is like email in that who it comes from is simply a type of header, which when sending from a mobile phone isn't editable - when a message arrives your phone can't verify where it actually came from. In particular given banks don't send from an official number, they send from a text name.