The Grinch WAS a horrible character! He hated Christmas, but his worst, most terrible problem was his heart! Dr. Seuss says it was at least tthree sizes too small!
That's why he plotted and planned to get rid of the Whos' joy! That's why he sneaked into all the houses in Whoville and stole every present, every bow, every bit of Christmas food, every stocking hung by the chimney with care, every Christmas tree. He didn't get Christmas because his heart was just too small!
The heart of Christmas is Jesus. To really understand Christmas we have to embrace Jesus. It's a heart matter! Those with small hearts don't get Christmas either!
Grinch is only a character in a book, but his tribe is alive and as well as a Grinch tribe can be! All those who also hate Christmas want to do exactly the same as Grinch did! They can't even stand for us to say Merry Christmas. And, the reason is exactly the same: their hearts are also too small! Those who belong to the tribe of Grinch also try to steal Christmas.
I think that the indomitable spirit of the Whos in Whoville came from knowing that Christmas is all about God coming to earth to call His people to be in His forever family!