All lives matter argument is one of the dumbest things i've ever heard. It's like responding to a "Save the whales" movement, with "all endangered species matter".
For what it's worth, I don't object to either "all species" or just whales. Regardless of whether someone is trying to protect all or focus their attention on one specific species, they're both working towards a good cause - though I do disapprove of the former trying to substitute the latter or vice versa.