I don't actually care about saccharin or fluoride or anything else. I care about being able to choose what I want, regardless of any other considerations. What I object to is lack of choice.
Supermarkets etc are not charities. If they are not making money from a product they won't stock it.
And there has been absolutely no evidence so far that this is even a decision made by the Foodstuffs. For all we know it could simply be the supplier pulling the product (which happens very regularly).