As someone who actually watched the Hovind explanations, and used to argue for them:
Micro evolution is the process by which animals adapt to their surroundings by natural selection, and genetic mutation. An observable process that will not be argued against by anyone who follows this line of reasoning.
Marco evolution is the process by which dinosaurs become birds, a process that is not observable in nature according to the model that someone who follows Hovind would observe. Which, in retrospect, is mostly because if you follow that model, there has not been enough time since the beginning of the world for this process to have occurred.
You can't ever forget that this model -- despite starting with the assumption -- has had a lot of work over the years put into it to come up with plausible or semi-plausible explanations for these things. It's not JUST "God did it.". There have been PHD level scientists plugging away at this stuff. And the people who usually get pulled into it -- myself included when I argued for it -- tend to dig in their heels when you say to them "well, you're just being stupid." That's actually basically the worst way to get them to even consider what you're saying, because to them it looks like you're just being another asshole who's come along to tell them what hundreds of people have already tried to tell them. The complete unwillingness of most people in the evolution camp to listen without automatically raising hackles will often trigger that person's underdog feelings and cause them to continue fighting. Because internally they do see themselves as the underdog who is right, and the Western mythology of the victorious underdog continues to fuel their feelings of martyrdom. Because they have those semi-plausible explanations, and they're more than willing to claw you until you're bleeding with them.
This is mostly the case of intellectual Young Earth Creationists though. The ones who will raise micro and macro distinctions of evolution. There is a significant portion who don't rise to the level of questioning that starts a person down that path.