Thank you, Lorna. As I mentioned in #1 of my original post, the Listing Owner and I are two different people.
You are right about this: yesterday, a confident, knowledgeable (needle in a haystack) member of the Airbnb support team confirmed for certain that:
1) the payout method must be entered into the Listing Owner's account
2) the Listing Owner and the payment account holder do NOT have to be the same person
3) the tax information entered on the W9 must match that of the bank holder of the payment method
4) the 1099 tax form will be sent to the bank holder, who will be the person responsible for paying all taxes on the listing, assuming theirs is the sole payout method entered for the listing.