I suppose it is a slight inconvenience to have to turn in forms daily instead of weekly, but not so much as to prove a significant burden.
Let's assume it's only a slight inconvenience to do that. (I disagree, knowing how shoestring many volunteer operations are, but neither you nor I can say for sure.)
The outcome of this law would be that many applications that, for whatever reason, can't get into Uncle Sam's hands within 48 hours would have to be thrown out or else 5 years of jail time. Which requires checking the time and date of all of them before submission. Which takes time away from registration. And it also means having to throw out any registration form that has past this arbitrary deadline, which means people who think they're registered to vote, aren't, and you can't fix that problem because how would they know they didn't register? All of this adds up to a situation meant to shut down registration drives. It worked.