Maybe so, but if I make a comment or statement like this to what is to fellow users only, I use "I" instead of "we" since I certainly don't speak for everyone, and so what regarding a device could do this "all the way back in 2003".
I don't want the option to delete all emails in my Inbox in one fell swoop with the iPhone since this could be done accidentally with such a portable device, and then add this to list for the habitual whiners and complainers. "We", those who access an Exchange account or an IMAP account, "we" probably have many more than 50 emails in our account's Inbox mailbox and use our iPhone's Mail client as a compliment only with the email client used on our computer for accessing the account where such fell swoops should probably be done anyway.
And since such statements, comments, or opinions are speaking to the choir anyway, this link is better used for providing feedback to the architect.
http://www.apple.com/feedback/iphone.html