You might as well forget about lending for 6-12 months now. The rates will only go back up after a few booms and busts. You only get good rates after a bear market because lenders have taken it out preferring to be liquid than earning less interest than the value is dropping.
We'll need to wait for a big hype cycle now, then after it has started retracing from all the fomo you'll see that money drip back out of lending again.
That 6M lender is crazy. He will get every order put in front of him and he holds the rate down for himself and everyone else. There is no point in putting in big numbers, the only sensible thing to do is dribs and drabs - on auto renew if you can't be bothered micro managing.it. He's even more crazy for leaving that kind of money on Polo if you ask me though.