Restricting voting in this case is clearly meant as restricting voting of (legally aged) demographics that tend to skew Democrat. There's a reason Republican politicians are more likely to oppose mail-in voting even though it's a logical thing to implement in every state. We're not talking about letting dogs vote.

If we want this to be a more representative republic, we should make voting as easy as possible for everyone. So yes, it's restricting voting in this manner is pretty evil.