This is false, and the opposite is true!
A want, used as a noun, refers to something that is not necessary, but something that is wanted, desired only.
A need, in contrast, refers to something that is necessary, so it is not merely something that is wanted, but something that is very essential.
I stole a cookie when you weren’t looking
I think it's "scolded in a mild way" according to the context. Sorry if I'm wrong
