Am I to take this non answer as an admission that you and your denomination do not partake of the Lords Supper in any organized service and that your larger point is not that you personally find anything wrong with the Church withholding one of the species, just that you think you can use this as a gotcha?
Nope. I don’t “belong” to some “denomination”, I do partake of the Lords Supper, “organized service” is only a construct of “religion”, I do see error in not partaking of both the bread and the cup and correcting error is never a “gotha” as much is it’s a directive from scripture.