> including the way snow doesn't just immediately turn off but stops falling slowly. I love it.

Funny, i disliked this exact detail. I thought turning it off hadn't worked for a few seconds and i retoggled it on and off a bunch of times before i got it

I think OP was sarcastic. (I hope!)

Can people actually read it with the snowflakes? The motion draws my eyes and makes it extremely unpleasant trying to read the underlying text. Very poorly thought out decoration.

And yes, I did think "this is terrible, there must be a way to change it", clicking the snowflake icon. The colour changed to a new colour but otherwise it didn't seem to change, so I just clicked back.

Because, as you noted, the snowflakes slowly end, which I didn't realize until seeing your comment.

It's fun. Looks neat. It's an extremely poor idea for a site trying to convey textual information.

I did notice it, but had no trouble reading windowed on a large screen (43" 4K screen).

:-) and while doing this, the background turns yellow — why? how annoying it would be if something like this existed in real life - turning off the fan switches on the lights, and turning off the lights switches on the fan.

Lookup the Mitch Hedberg bit about hotel lamps with 3 way switches