This is more interest rates driving speculation. If I can borrow money at less than 3% it makes sense to borrow and lock it in to an asset for 20+ years. It's a good return on the investment for people who have an excess of wealth. Conversely the helicopter money is placing yet another squeeze on the poor and middle class. They're wanting to take advantage but not from their excess wealth so they can't ride out the shifts when it turns on them.
Since the stimulus has passed the dollar has strengthened, and will probably continue to. People are assuming that interest rates will be going up due to increased spending and employment.
As interest rates start to bite the value of stocks and real estate will slow down or reverse since they become more expensive to buy (with leverage), so it's not a great bet going forward.