I agree, but you seemed to be the one adamant that your bank was "risk free". T-bill is even more risk free, if there could be more risk free (it technically is, but there both zero in practice).This is so far down in the weeds of speculation, like worrying about future tax law changes, that I'm not interested in that rabbit hole. I deal with what's here, today.
If you stick to T-bills you get a form 1099 from your broker or Treasury direct and enter it on the same form as your bank interest. No extra disclosures. Your lending money to the US government, and they already know about itI don't do T-Bills because I have to report certain types transactions in a financial disclosure. It can be quite burdensome.

Where do you think banks put there reserves? In T-bills of course - or park them at the fed which pays the same as T-bills practically - and they pay you less.
Honestly, put your money where it makes you happy. It just seems like your going to a lot of trouble to manage a loan so you can make a few bps in interest, then you make less interest. I hold lots of T-bills, but I just don't like loans, of any kind. I pay cash when I can, including for new cars.