The problems with [the forum that shall not be named] are manifold. The first would be its insistence on marginalising discussions about Hogwarts Legacy, a sales phenomenon. The second is an incessant need to downplay any success that PlayStation is achieving; some of their comments in the latest NPD thread are appalling. The third is the cheerleading for an anticompetitive acquisition.
The fact that the gilded hunter bundle doesn't represent a price increase is likely to be by necessity than by circumstance, but I take your point that the Series S is the one that is being overshipped. That series of circumstances would lead to a scenario in which XSX can be out of stock (in demand? Can't say, and signs point to no given the resale value below MSRP) and Xbox Series consoles can still be hitting the higher end of sales estimates.
As to the Starfield/Skyrim/Fallout discussion, remember that the latter two released on all platforms to achieve that popularity and those numbers, and that Xbox didn't have the greatest slice of the pie. Releasing as a new IP on an unpopular console, and not exclusively (PC release) against one of the most popular IPs in gaming (Spider-Man), or IPs full-stop, means Starfield is unlikely to hit equivalent metrics (MAUs or console sales that could compensate for or offset the guaranteed revenue from releasing more broadly). It won't be the death knell for the IP, but it's a grave mistake to withhold it from PlayStation and to devalue it by giving it away as part of GP.