I strongly disagree here. Compare it to having the qualifying rounds in advance at other locations. For those who qualify through such events, should a distinction be made between those that took a loss along the way? I think that would be silly. Qualifying is qualifying.
The truth is that one can pay a steep price for that first loss in the qualifying tournament at the WPC, because it gives them poor seeding in the main event. Poor seeding may or may not cost them due to luck of the draw. Ask Jayson Shaw, who drew SVB in the first round of the knockout stage. If he had won both his qualifying matches, he could not possibly have drawn anyone who did the same.
This is not double elimination, and thankfully, pool is slowly evolving past the double elimination era in its biggest events. Speaking as a fan, a do or die match offers the greatest possible drama and entertainment. Matchroom understands this, and thankfully, they have no double elimination events, understanding that two stage events are far more exciting. Even the International Open has adopted this format to the betterment of the event. At Matchroom events, Stage 2 is always played as single elimination, and it's electrifying to watch.
Forget about that second bullet. The greatest champions don't need it. In pro pool, double elimination is on the endangered list at the most significant events. It's a step forward for the sport.