There is a circular reasoning fault/contradiction with the "animal rights" philosophy. If we apply "human" standards and rights to all animals, then we must admit that we as humans are something different and special, because animals in the wild kill each other quite freely for food and sometimes for mating rights. If we as humans are just another animal, then we have every right to predate on other critters however we wish.
I pretty much agree.
Biologically, assuming there is no supernatural God, humans are "just another animal." We do not have some absolute moral authority to decide how we will and won't treat everything else.
Philosophically, whether "human" standards and rights apply to all animals, or whether "animal" standards apply to everything including us -- anarchy -- or something in between, is an entirely social decision. A society could decide to adopt any standard it likes.
We already ban animal cruelty, presumably because:
1) it's emotionally distressing for humans
2) it's a predictor of future violence toward humans
My concern about excessive/constant criticism of animal rights activism (from the political right) is that it works to undermine element 1, by subtly conditioning us to care less about animals, and that may end up causing more of element 2.
I do not think that we should ban animal research or hunting, but I think we should all work to maintain some emotional sensitivity to the well being of animals, because I think that is closely connected with our treatment of other humans, and perhaps our intrinsic sense of ethics and morals. I worry that a lot of the negative reaction to animal rights activism is doing away with that sensitivity. Everyone who has pets already understands this dichotomy: there's a responsibility to care for pets and ensure their well being, even while the owner/pet arrangement is not perfectly equitable in an absolute sense for the pet. However, even some pet owners seem to adopt a troubling attitude where their pets are well treated and cared for, but other animals and particularly wild animals are completely void of any rights even including rights against animal cruelty.
The blame might lie with the animal rights activists for instigating the conflict which is having those negative effects, but if we can't control what animal rights activists do, we have to control our response so that the outcome isn't even more negative.
Furthermore, what does staunch opposition to animal rights activism say about us as human beings? It may not be rational to grant animals any rights at all, but we are not rational creatures. Making social policy based on pure rationality has emotional costs.