It's still littering. Used toilet-paper is biodegradable too. Would you care if I threw some on your lawn?
Anyway, throwing away food is appalling. It costs a titanic amount of resources to grow, make, manufacture, transport, package and sell. There are significant environmental costs to producing anything and most of it isn't captured in what you pay for things. To throw almost anything away is bad; throwing away food is criminal.
And it's irresponsible behavior in front of children, who typically take on board what you do, and not what you say.
Don't do it. It's nothing to do with Freedom. It's to do with being a responsible adult.