I've heard plenty of 'Merry Christmas' wishes this year. It seemed that there was enough "happy holidays backlash" a couple of years back that most businesses are sticking with Christmas.
However, I wouldn't necessarily go so far as to claim that failing to wish people a Merry Christmas is denying Christ in any way. Christmas itself wasn't even celebrated by most American Christians until the 1850s. December 25th is not really an essential part of the faith, since there is only a 1 in 365 chance that Jesus was actually born on that day.