Yep, because she's not moving, she's not eating with her braking foot and it is perfectly possible to just put the bowl down on the passenger seat and move on.
It's the same for the law on mobiles, even if she was stationary in traffic with the handbrake on, she is still in charge of a vehicle and it's still "illegal". Is that common sense or is it just legal pedantry?
Meanwhile Mr Nanny State is weaving all over the road and proving a unexpected and agitated distraction for everyone around him, and judging by the loud squealing in other videos his brakes are crap too.
If I was a woman I'd be really freaked at a mentalist in Lycra screaming orders at me, while I was quietly minding my own business waiting at some traffic lights. The guy is a menace.
I'm all for not driving like a loon, but assessing risk sensibly is part of that, and at that exact moment she wasn't posing a real or actual risk to anyone.