It could all be a big lie, but I find it hard to imagine the utility of it.

Politicians get positive screen time and headlines acting like they care about 'transparency' in a context that won't effect them politically or their donors financially. They get to say a bunch of open-minded sounding but totally non-committal stuff about 'getting the public the answers they deserve' but they don't have to followup on anything. It's a bipartisan public brownie-points bonanza, plus it's a distraction from more controversial problems they should be addressing so of course they're going 'all-in'.

~~The guy is selling a book.~~

EDIT: I was sure I'd read this but on further research that doesn't appear to be the case. I can't find any reference that he's writing or has written a book on the subject. I think what I read is he's following a similar pattern to people over the decades who previously worked in some government position and make similarly understand claims to drum up attention and then publish a book.