I happen to really like Christmas and am glad it's secular and not religious: if this was this case millions of non-Christians would feel left out. It's a fun holiday, Christian or not, and people need to get their heads out of their asses.
I'm with you, what's the point of complaining that it's been commercialized? What matters is how you yourself celebrate the season. Remind people of the reason for the season, yes, but don't complain about their way of celebrating.