I think it's very silly. I as a consumer would like to buy a substitute for cows milk that is not animal based. Being forced to call it "almond juice" or something is just making my life harder (and not making anyone elses life easier).

Nobody is going to think that "almond milk" is actually the same as cows milk and accidentally buy it instead of the dairy product, so what's the problem?

(Also, almond and soy milk are not new products, they've been consumed for hundreds of years in Europe and Asia respectively)