Honey is a strictly controlled substance in Equestria.
“Psssst. Hey kid, wanna try some honey? The first batch is free!”
(Eyes off the honeypot there, your highness)
Rainbow Dash did D.A.R.E. to say ‘no’ to illicit ‘natural’ sweeteners, but she’s still disappointed to the point of devastation that anypony would actually break the law and deal in them.