As you (and Jay) may recall, I really dislike statements like "the cream always rises to the top" as a justification for things like slop rules and short races. I view it as a specious argument. From 5 years ago, here is one of my rebuttals to such statements. Especially note that my concern is not regarding just the event winners, but everyone trying to earn a living in this game. https://forums.azbilliards.com/showpost.php?p=4525290&postcount=30
For this most recent event, with races to 8 in Stage 1, you said "most of the cream had no trouble rising to the top in Stage 1. ... ." I think quite a few bottles of cream (e.g., Van Boening, Biado, Kaçi, Gorst, Aranas. Ouschan, and more) were spilled on the floor and went down the drain. Of course, some of that sort of thing always happens, regardless of race length, but the shorter the race the more likely it is.
The races to 8 on stream for the World 10B averaged just 74 minutes (only 2 matches went over an hour and a half), whereas they were scheduled at 2½-hour intervals. When we're asking players to spend this long at an event, I think it's appropriate for the races to be longer than to 8 for determining who recovers their expenses or even profits a bit.
A couple weeks ago I learned (or was reminded) that they played races to 5 in the group stage of the WPA World 9B Championship in 2004. But I guess that was fine, because the cream (Pagulayan) rose to the top.
I see professional pool becoming more and more like professional golf in that there is less separation among the pro level players than ever before. On the PGA tour just this year we have seen several new players (two just out of college) win tour events. The best players still manage to make their presence felt and are at their best in the most important tournaments (Brooks Koepka this year!). This holds true for pool as well. We keep seeing new faces emerge from the proving grounds of the Euro Tour and Taiwan and the Philippines have young talented players still waiting in the wings to make their presence felt.
Pool continues to grow in popularity worldwide and as this happens and the tournament prize money increases you can expect to keep seeing new young players who are challenging and beating the name players. That said, if you look at the final sixteen players in the recent World Ten Ball, at least half of them are long standing champions of our sport. There is only one (Yoshioka) unfamiliar name on the list and a couple of the less well known Euro players, who have done well in Europe and are not unknown to the other top players.
There is more parity in pro pool today and it should be no surprise if a relative unknown goes deep or even wins a big tournament (although I have yet to see that happen - an actual win by an unknown or little known player). That happens far more often in golf, even in fields full of big name players (Mathew Wolf, fresh out of college, won a recent full tour event!). Nothing like that has happened in pool as yet. Ko P. Chung is a very well known player who has been knocking on the door for a long time now.
Somehow in pro pool, the final six to eight players always seem to be among the elite in the game. There has been an occasional surprise (Yoshioka again) but that is an outlier, especially in major tournaments.