You could spin that the other way to be fair in that the PL's evidence isn't irrefutable either!
Or it could be that the amount of evidence the panel need to sift through - irrefutable or otherwise - means that this was always going to take several months or more for both the hearing and subsequent write-up and verdict, even if it turns out to be a slam dunk for either side.
There are people far better qualified than me on this forum who know their onions with this type of thing but I've never been convinced by this theory that the quicker the hearing ended the better it is for us, so I'm quite relaxed if this takes another 12 months or more before we get to know the outcome. Of course, I want to know sooner as does everybody else but we don't get to decide the timeline on these things.