Would you trust your bank with your bitcoin to earn interest?
bit of a sorta related aside here
the branch manager at the bank i set an account for gemini up with was surprisingly knowledgeable about bitcoin. we discussed coinbase and gemini (she had to make sure i wasnt being scammed into signing up for gemini for sending coin for promises or out of the country and such). i got the impression she was a bitcoiner herself although i didnt ask of course.
now thats different than holding coin as you mention but still it was a nice surprise that she was all on board with setting the account up. telling her it was mainly going to be an offramp from gemini to fiat in her bank probably didnt hurt.
banks are slowly getting the message methinks. or at least some of the employees are anyway.
You likely realize that lower downs (meaning people who actually deal with the public) are likely not even in touch with what higher ups might end up doing after they have gathered the information and with the passage of time their considerations may change and sure it might help or hurt to say what you are actually doing and your intentions. Sometimes, they would give more latitude with longer accounts and if you have cashflow coming in on a regular basis versus if the account might only be used for cashing in or out of bitcoin.. I don't claim to know except that you have even acknowledged that there could be some evolutions and even raised consciousness, but I would hardly consider those kinds of seeming raised consciousness of some of the banking folks to be set in stone, either.. in terms of evolving towards more and more positiveness and acceptance of Bitcoin (and face it other crypto that may well distract them from clear-thinkenings, too).