I almost never use coffee creamers, and never use artificial sweetners anyway, so I'm not disappointed to be without them (I've never considered them to be a healthy option...).
As for the passengers being allowed to bring their own creamers and sweetners on board... There are sweetners in tablet form, and as the creamers normally have quite high calories and tend to contain some kind of dairy substance, I don't see any problem substituting that with real milk. Anyone who really want a milk substitute can bring soya milk on board
So why not ban passngers from bringing any powdery substance on board, apart from odour controlling powder (in the interest of the people sitting nearby)?