He's saying you're misinformed and have no idea what you're talking about. His counter argument if he chose to put it would probably be something like. What do you think happens after a few million years animals are just like "nope we're good no more completely random uncontrollable mutations that show up in our offspring no matter how small the difference might be because then they'd be a different species and that doesn't happen" said the blue parrot "we're good we're completely and perfectly adapted to an ever changing environment. Let's stop here". Evolution doesn't stop ever. Saying micro-evolution exists but macro doesn't is stupid because they are the same Dang thing.