If they were the tiniest bit decent they wouldn't be working in ransom ware.
If they delete the files, it's not out of decency. It's out of a desire to build a reputation of post-ransom trustworthiness so others will pay in the future.
Yeah! If they were decent people, they'd be nonconsensually taking individuals' data and profiting off selling that, instead.
Believe it or not, it's possible not to scam people at all!
Boeing does this?
If they were the "tiniest bit decent" they wouldn't be ransoming exfiltrated data.