We are focusing on how it looks from the outside but consider it from my father's perspective. A life time racing fan and 50c cross doubles man. Puts his bets on around 11am each morning having studied some form. Will pick out ten horses and split them into two groups of five.
He'd have looked at AOA and said to himself "I wonder will he be given a hard race. He's a decent horse but it's a long season and you know how Fame & Glory went on his first run. but at the prices, I'm willing to take a chance". Now he gets to the Chris Grant runner and says "duck eggs, not out for two years, interesting jockey booking but who else would he have ridden in the race, no chance. Better go for the fav who has form in the book". Now he was making a judgement on AOB's runner of lengths i.e. would he be fully ridden out, whereas with the Grant horse there was nothing to go on. sometimes 50/1 shots win after 2 years off, but they aren't normally backed into 2/1 in a scam, which is what it is!!
So it's not just the outsiders you wonder about, but the average punter who doesn't gamble with the computer in front of them. I used to think "well done lads, taken the bookies for a ride" but it happens so often now with the like sof Byrnes, Curley, Martin and AOB (if you want to include him in), that something needs to be done. Remember, they changed the John Dunlop/Mark Prescott rule which stopped them upping a horse from 7f to 1m6f, so they can implement change if they want to.