Uh no not because I say so. It was a box office hit and I don't control streaming, broadcasts or anything else that makes it popular even today. Do you honestly think it would be shown everywhere if it wasn't popular still today?
Ratings last Christmas would seem to disagree with you. It helped solidify NBC last year to second in the targeted demo only behind a basketball game.
https://www.thewrap.com/the-grinch-nbc-nba-abc-christmas-ratings/
You don't like it. We get it. It must be everywhere still because Stout says it sucks.
There are lots of movies in history that were not "critically rated high" but are classics today.
It's only the second highest grossing Christmas movie in the last 40 years.
It's only behind Home Alone.
https://www.boxofficemojo.com/genres/chart/?id=christmas.htm
But you know....cuz Stout say so.