While his story is somewhat over dramatic in some parts, I wouldn't say he is a sore loser. The point is they knew about this issue well ahead of the tournament and did not do anything about it. I don't know how management could have seen that as being ok. How hard would it have been to add each of the seven bowlers to a different set of lanes? It would have taken those sets slightly longer to finish, but I think it would have made the situation a lot better.
You couldn't really do that as it wouldn't be fair to the people on those pairs as you'd have 8 people breaking down the lanes and a slower pace of play then the other lanes.
They should have anticipated the need for a breakdown pair and limited the entries to 7 less bowlers, or moved 7 entries to a different region.
Management tried to offer an apology the complaint was forwarded up the ladder, but what could they really do? Restart the whole tournament for them? Give them an exemption into the next round? They had delays but they were able to complete their four games. The people on the pair didn't do great, but they also didn't finish last, and like the OP he bowled above his average.
If it happened to me I'd probably want to do the same thing as the OP did, and maybe his efforts will scare some people away from future AMF events, but there will probably be a much larger majority of people talk about how good of an experience they had.
Sorry to the OP for your bad experience, and hopefully your crusade is giving you a sense of relief.