When you choose to use the expression "absolutely no reason", it is trivially easy to disprove your claim. My argument is one of them, and it is a valid reason to vote no. Your further arguments are valid reasons to vote "yes", and their pros and cons may or may not outweigh each other.
But you are verifiably wrong to claim that there are no reasons to vote no. Opposing race-based legislation in all its forms is a very valid position, and the only non-racist position possible to take in this.
Grow the fuck up. You are the one arguing for race-based legislation. That makes you the racist. Every human has the right to be equal in the eyes of the law. There simply cannot be an excuse for having tests based on genetics that lead to different rights in a society. That's just purely despicable in every way.