Its a bit of a misnomer.

Skipping breakfast reduces the caloric energy you have. Eating a full breakfast is basically going against your instinct. Optimal thing for autistic people would be a energy bar that is both healthy, has good texture, and makes you feel full.

The game puts the "masking" definition right in the start page, no need to deduce. I also dislike how any form of self care reduces your masking even if you're alone.

It's designed to make you lose in a couple of days, which would imply you're not a highly functional autist, and hence I wonder how the heck did you get a job without others noticing your autism?

I don't enjoy having a full breakfast before work, but I usually still do, otherwise I'd be hungry before lunchtime. It's one of the thousands of little compromises we all make every day, I'm not really sure how this constitutes masking, or I'm not understanding the term correctly.

My instinct is to eat breakfast in the morning because if I don't I'm flagging before lunch time and lose energy / concentration / get cranky.

(of course the other issue there is that I prefer having fixed times in the day to eat)