If you look at the brum v Berwick post there was about 17 pages of debate. Some critical some not. However the very small list of replies shows that some people are only happy when moaning about something and not interested when something good happens. Unlike yourself many have no intention of going perry barr but feel the need to complain at every turn.
The difference may be the track announcer seeing who has left the pits & the referee being told what was happening. Things can sometimes change and the rider not getting the message quick enough.
No rain offs!!!! , knockout Cup, play offs, all has to be accounted for and planned into the fixture list. It's not just thrown together. Also time taken out for the local egg& spoon race or intentional bean bag throwing or whatever they do.