I tend to agree with you but you might find this more common than you realize. I’ve noticed in my lifetime products I like change their recipes. I’ve also seen products once labeled as ice cream now labeled as frozen dairy dessert. I’ve seen this type of thing in lots of different products. Not just ice cream. And I’m not convinced anything changed legally in many cases. Usually I suspect it was to reduce costs.

It’s now something I actively look for on packaging when a product gets a new look.