That's avoiding the question, and really quite aa arbitrary use of that fallback position when it comes to a discussion of Calvinism. Just hoping to get a valid response.
"Jacob I loved, Esau I hated" had nothing to do with their response to Christ. Why was His death necessary?
I don't believe it's avoiding the question, I think it's explaining the fact that no one knows why God does what He does. Is it not possible to you that there is no answer, that it is unknown?