All I know is Bearden and Smyrna do have the right to complain about the refs, because I was at that game and it WAS horribly officiated all around. There were many terrible ball spots, a couple unnecessary flags, bad calls on complete/incomplete catches (besides the TD out of bounds catch), more than 1 missed call on possession, among all this were plenty of holding, passing interference, ect. flags there were never thrown. This was all around and I don't know if it would've changed the winner but in my opinion, both teams are ok to complain about the refs.
Seemed to me like the fans were more outraged about the red zone fumble and onside kick call, rather than the receiver out of bounds call.
Also it looked to me like the refs refused to explain their calls or simply what was happening to the caoches. Several times I saw coaches signaling for the refs to come tell them what was going on and the refs flatly ignoring them.
Does the losing team have the right to complain about reffing? I'm not sure, but I do know both teams should complain about that game imparticular. I hope they inform TSSAA for future games.