There are many with crypto who struggle to get the normal banking system to touch their money. And, no, the vast majority of those are not engaged in any sort of illegal activity.
It’d be much easier to just pay my mortgage in crypto, then the endless back and forth that happens to get a bank to take crypto proceeds. (Count yourself lucky if they don’t shut down your entire account!) Crypto users are much like sex workers in this regard.
When my crypto startup launched, it was nearly impossible to find a bank to give us a checking account. We were literally walking around with a VC check and nowhere to cash it. Just because we had the words “cryptocurrency” in our charter. 99% of the banking system hates crypto. This is a smart move to deliver value to an underserved, now very wealthy, customer segment.