It’s not available to banks, only to used-to-be-banks.
“ Borrower Eligibility: Any U.S. federally insured depository institution (including a bank, savings association, or credit union) or U.S. branch or agency of a foreign bank that is eligible for primary credit (see 12 CFR 201.4(a)) is eligible to borrow under the Program. “
I’d call the BTFP a mechanism to stabilize the banking system in the US, given rising interest rates. I guess I don’t care as much about the semantics, though.