I could not care less whether any of these accounts are Dan. It does look like they have been doing some significant good, which is to be applauded.
I really have only one question about the general scheme, however. Why wouldn't the prudent plan be to directly transfer the STEEM, rather than burning the key? That would certainly be permanent, and would help clear up any lingering doubt as to the intent.
Actions definitely speak louder than words. As I said, it looks like some significant good has been done already. I would be thrilled to see it continue.