don't be fucking retarded.
what else is it going to say? "a horde mostly comprised of tauros appeared"
they probably just name the horde based on whatever the majority is. there is literally no reason to merge two separate pokemon. how would that even work? would they have the same stats now? no pokemon has ever had it's stats changed. they have never uncreated a species of pokemon. ultimately both of these options are stupid and obviously not going to happen.