Even if he somehow missed the NOTAM, (low-level?) aerobatics over a runway at a busy-looking aerodrome without any contact or prior arrangement is just plain stupid. Illegal too, I expect.
I think we are all agreed there are NOTAMs worth looking at, but some are not, and the presentation is bad.
I have this annoying suspicion that they will never put marked-up charts online in case a few pilots print them off instead of buying the months-old paper ones. Bean-counting trumps safety every time.