What then? Surely nobody would suggest Tom Wright is the only Brumby worthy of a spot in the TOTY when the team itself dominated the series.
Others who probably should have earnt a spot would include Fainga'a, where no hooker actually stood out head and shoulders above the others; Slipper who was a model of consistency over the series; and Simone who really was a standout No 12 during the whole of the tournament. I accept that players like Neville, Samu, Lolesio, Banks were either missing for a swathe of the series or out of form for some part and wouldn't get a spot based on overall performances in the series, but it beggars belief that only Wright made the team. Clear as day to me that there are too few Brumbies supporters voting against the bigger numbers particularly from the Reds.
I'm not arguing there shouldn't be more Brumbies in a team of the season, just that it's not because of bias that they're not in
this team. It's a cumulative team, based on the teams of the week for past 5 rounds - it naturally favours standout performers over consistency and that doesn't have anything to do with supporter bias.
Of the players you've mentioned:
Folau Faianga'a - Played 3 of those games, one from the bench, one the thrashing against the rebels. (you only selected him for one of those 3 games in your ToTWm favouring Horton and BPA, with Uelese getting no starts but two bench appearances)
Irae Simone - Played well and made the overall bench, lost out to To'omua who has been one of the Rebels best. (You favoured Simone 3-2, but had To'omua in the side whenever he played, Simone was not on your bench the week you didn't pick him to start)
Slipper (and Sio) - The job sharing at loose head for the Brumbies makes it harder for either of these two to stand out as they don't tend to play more than half a game and they trade the start (You had Orr on equal footing with Slipper - one start, one bench each)
I'm not certain on KOB's weighting for starting vs bench, but even if the side was picked on your votes alone it doesn't look like those brumbies would necessarily be favoured, and as a side that could be considered to be exhibiting much more obvious supporter bias than the one you're complaining about.
I'm not doubting that we all vote with some degree of bias, I just don't think it has as great an impact on selections here as you're claiming.