This is exactly my thoughts. If you are reading this, author, please either make the snowflakes less distracting or toggleable. They are a pain on mobile.

> author, please either make the snowflakes less distracting or toggleable

They already did, as the grandparent comment already explained:

>> TBF, you can turn it off by clicking on the snowflake icon in the top right corner.

Did you see what happens when you do? I wouldn’t say it improves readability.

Yup: all the animation stops, the overlaid snowflakes disappear, and the background changes from blue to yellow. I haven't bothered to check the foreground/background contrast of the two versions, but I suspect that, although the yellow version will have less contrast, the removal of the snowflakes will make for a net benefit to readability for the average person.

Button doesn't do anything for me.

This is the biggest mistake, imo. The snowflakes should disappear immediately...