People who start from an illogical assumption and then expect you to argue against it confuse me. “Failure points”? I’m guessing you’re young and don’t mail things often, but they basically don’t happen. Like, ever. 999/1000 times, it just gets there, they all do. The same could be said of risking a malicious person collecting the polls at a drop-box, or it could get dropped in the election day chaos.

As for why they might not want to go in person? That’s literally the easiest option, there’s not really a middle-man. My state sends the ballot in the mail (yes, I’ve always gotten it). Then we can leisurely fill it out at home, privately, with all the time and resources to research ballot measures, etc. Then just drop it in outgoing mail at home or work and it’ll just get there. Again, never even heard of anyone ever having issues. And you can track it and submit a provisional ballot in case something does happen to the original one.