I've been trying to understand the logic of this comment for the last five minutes, but genuinely the only explanation I can come up with is that it's satire.
As a separate point, they preemptively mention that a similar disparity exists re/ getting an ID, which is what you're trying to add as a requirement. It's a straightforward argument.
So where do you get "that Michigan makes it difficult to get an ID for voter suppression purposes"?