So, what does it actually do? I've played loser breaks many times, and I have no problem with it. To me, loser breaks just means underdog rules. Its not a spot, but it gives a chance to the guy who isn't supposed to win.
It does the opposite and it becomes a spot. If two players play, one of the two is most likely the better player. Whoever gets to the hill first, probably the better player, with the score say 10 to 6 race to 11.
The weaker player now behind has about zero chance to come back and win. He can't even get lucky and put a few racks together. The guy on the hill gets spotted the rest of the breaks to win the last game and the set.
In other words, the player that is losing as he tries to claw his way back to win a game, has to now give the break to the guy on the hill and hope he doesn't break and run out.
Winner breaks is the best way to play in tournament play. Although the obvious choice of the better player It also benefits the weaker player. In fact the only chance the weaker player may have is winner breaks.
If they play a little over their head, get a few rolls and they may beat a champion in tournament play. I have never seen a weaker beat a much better player playing "Tit for Tat", it almost can't happen.
If the weaker is expected to enter a tournament, and without them you have no tournament, he has to have the opportunity to do something explosive, get lucky, play over his head or the tournament is a waste of his entry fee. Winner break is his only real hope.
I don't think winner breaks is perfect, there are ways to augment it that maybe can improve the game. I don't like hill hill. It should be win by 2. No 9's on the break for a win. That makes no sense. Spot the 9 and the player keeps shooting. Possibly move the rack forward maybe an inch, thats a thought. Use a break box, that may be an improvement. There are probably lots of ways to make the game better. You just try them and see what works. I personally don't like BIH but that is another story.