The CI issue was simple. There are no medical tests to prove whether it occurred or not. Therefore it might have. Hence a not guilty verdict because the prosecution couldn't prove it hadn't happened.
Whether you think thats a lot of holes in a lot of cheese lining up at a very inopportune time in tragic circumstances, as some may, well thats by the by.
It seems like based on the opinion of a lot of experienced aviators here that the lack of time in the jet was certainly an aggrivating factor.
Whether or not you consider its reckless and negligent to perform an aerobatic display in an aircraft without the requisite training and knowledge as to do if things go a bit t*ts up, is of course, a seperate matter, which maybe wasn't fully considered.