There are all sorts of reasons we end up with laws and regulations. Some are good ones and some are not. We don't know the original motivation for this particular law.
Who knows...it could have been some pet project of a special interest group (like an AR group that got some state congressional's ear), an attempt by that state to collect information on how many exotic animal dealers, breeders, importers, or pet producers were operating there, an attempt to raise revenue from the exotic pet market, or because someone decided they don't want to take a chance that anything non-native gets established in the wild.
If someone feels a particular law is unjust or unnecessary they can always start a petition to challenge the law or at least get the question added to the next election ballot.