If you are making predictions about the world, you should be willing to put money on those predictions so that you are grounded to making predictions that you actually believe in as opposed to just blathering.
(Instead of engaging with some some random internet commenteer.)
You are, on some level, suggesting that money is a more compelling argument than an actual argument, because that is your only response.
I evaluate arguments on their own merit, not based on extraneous data like appeal to authority or what bets the author makes.