I think we have to keep in mind that eating a meat sandwich with a vegan/parev cheese or a meat meal then parev ice cream is not a loophole…both the non dairy creamer and vegan cheese have no dairy in it what so ever…so not sure why you would need a loophole…
First of all, I agree that it’s not a “loophole”. But the burger is a serious shailoh of maris ayin. The ice cream is much more lenient because it’s not eaten with the meat.