To use or not use is a free choice. Its so hard to understand that this feature WONT change ANYTHING to who wont use?
Perhaps we want to prevent the number of webcam wheeling hippies on channels going round pestering all the guys with female sounding nicknames for webcams instead of just ASLs.
Perhaps we don't want to be caught dead using a program that has a built in webcam because of the stereotypes generated from it (kekeke you're another noob with a webcam irc client kekeke).
And of course, once again, if the demand for a webcam in an IRC client was so great, howcome mIRC isn't dead and some superior IRC client with webcam ability has taken its place? (See point 1 point avoiding webcam wheeling hippies).