My safety glasses didn't fog up today!
I tried a new lower face mask (I'm not sure I'd be comfortable playing with just a gum guard), and also some AliExpress "anti-fog" wipes.
And it worked!
For whatever reason, I had my first game in a long time where I didn't fog up, without having to resort to strapping a PC fan to the back of a helmet.
The game is much easier when you can see what you are doing.