Yeah I thought the same thing too. Takes a few moments. A UX suggestion for the author. If a user wants it off, it doesn’t need to be graceful, just quick.
Wow, it turns off the snowflakes, but the ones already falling will stay there and keep falling. I thought it only changed the background color to yellow, so assumed it doesn't actually turn off the snowflakes, wanted to come here and comment how ridiculous that is on an article talking about bad icons, then I saw in the comments that it turns off the snow effect... eventually (like a 10s delay).
It's hilarious that it's a great article about clutter, and yet, the post is on a theme that is so badly cluttered it would have been funny... if I could have read the article...
Flagging a submission just because they added a little whimsy for the holidays to their personal website which you dont like? What a sad, sorry, hate-filled way to go through life.