It's posts like this that make me think of Roosevelt's Man in the Arena speech. It's easy for folks on the sidelines to criticize and say "what's so hard?" It's for the best who the folks rolling up their sleeves, doing the hard work don't see/hear it. There are tons of teams working at this from multiple angles, both trying to prove and disprove it.

It's only been a few days! The fact that cutting edge science from a pre-release version of a paper isn't going perfectly doesn't mean much. Give them time. Eventually we will have more solid answer.