Few, if any, of us agree with the conclusion drawn in the opening post in the thread, but I, for one, appreciate the sentiment in it.
This isn't the US Open as we knew it, but from a historical perspective, what difference would it make if Matchroom called their new event in Vegas "The American 9-ball Championships?" Would we somehow be robbed of the memories of US Opens past? No, not really. Those memories are for keeps, part of pool's lore.
Matchroom, in obtaining the rights to the US Open 9-ball name and bringing this event to Vegas, where far greater fanfare is available than in the past, has grabbed the baton from the Behrmans and it is Matchroom's turn to run with it. They are doing it without abruptness or lack of respect for the event's history. The US Open trophy is now known as the Barry Behrman trophy, and Barry's kids, Brady and Shannon, were center stage and were a shining presence at this year's event, reminding us all of the tournament's roots.
Matchroom is not discarding the history of the US Open, but instead embracing it and building upon it, but it's their event now and, as the most skillful event producers in our sport, they'll add their special touches to the event.
... but there's nothing wrong with feeling regret with respect to the transition. The original poster's sentiments are, in fact, valid, at least to a point.