Except it's established in Revenge of the Sith that Qui-Gon being able to communicate with Yoda AND being able to teach him and Obi-Wan how to become Force Ghosts is not normal. However, your theory does have some merit to it as in the Clone Wars when Obi-Wan sees Qui-Gon's ghost on a planet that is home to the living embodiment of the Light, Dark and the Grey parts of the Force (long story Chuck will likely cover it but I do recommend checking it out as it's honestly a really good arc) when Obi-Wan asks how Qui-Gon is here Qui-Gon responds that he is here because Obi-Wan is here.Makeshift Python wrote: ↑Thu Feb 04, 2021 5:29 am My theory about Force ghosts has always been that you can only speak with those you actually share a past with and that you know how to channel the Force. The only ghosts that we ever see appear for Luke is Obi-Wan, Yoda, and Anakin. No other Jedi appear because there is no connection between Luke and Mace Windu. Likewise, Rey only sees the ghosts of Luke and Leia at the end of TROS, and nobody else shows up because they're no one she ever had interacted with besides Ben (which would have been awkward). This would also explain why no ghost appeared before Luke during his years of exile because he had cut himself off from the Force, and it was only once he reconnected that Yoda could appear before him talk some sense.
The only thing that kinda breaks that theory is that Rey hears the voices of Jedi of the past encouraging her to persist, but they're only voices so there's probably some wiggle room there.
However, it is still the case that Force Ghosts are not normal and Qui-Gon was only able to achieve it due to how much he studied the living Force. This is one of the reasons I so strongly dislike the bit where Rey is able to connect with all the Jedi. Not only is this yet ANOTHER power she gets with no real training but is also muddies the water in regards to the nature of life after Death and how it works.
Honestly, for me it feels more like the writers just didn't care about following the rules of established lore just for the sake of wowing the audience. I'm not against that but there has to be limit to how often you break established lore for the sake of a cool moment.
One of the things I like about TPT is that it kept within the rules of how the rules of the world work. Every skills that are shown are just extensions of abilities that have already been established and other abilities like being able to bring people back from death is only a legend in universe and something that is discouraged by the Jedi. Then ROS came along and Rey can now Heal and people can be brought back from death with ease because Shut Up.
Rey being just able to heal is yet another case of TDST rending the first two Trilogies pointless for the sake of wowing the viewers. Same thing goes for the Holdo Maneuver, not because it breaks all space combat moving forward but because that's not how Lightspeed works. Lightspeed is just used to enter Hyperspace which is an alternate reality but that is ignored for the sake of a cool looking shot. And like most things in TDST the films keep trying to justify the existence of these world rule breaking moments by going on about how they're all a 1 and a million or so rare that it only happens every Quintilian Centuries or what have you.
The more you try to make something a one and done deal and just handwave away why it's not done more often throughout a story, the story has a problem.
Take Superman, his ability to fly is now synonymous with the character along with his classic abilities (Heat Vision, Freeze breath, faster then a speeding bullet and so on) but his other powers, like being able to create an energy field that creates a net to pull a space pod so it's shielded from the sun is... not one of his better known powers and to my knowledge not used that often for obvious reasons. It's ridicules and breaks the story.
Things like the Holdo Maneuver, Lightspeed Skipping and Force healing will likely be used less often because it breaks the rules of Star Wars and without those rules there is no tension. If you can just jump from system to system with no real issue then why bother with trying to get the concordance pushed in when you can just go. Same thing with tracking through Hyperspace. If you can track people wherever they go then there's no safety.
All of these are one shot uses used to look cool, dammed the established lore. Of course, this is inevitable with any series that has gone on as long as Star Wars and it's not like Star Wars hadn't broken these rules before and it was just as badly received in those stories too. But to turn that around there was no reason Disney couldn't have learned from those stories as to why you REALLY shouldn't break established lore just for the sake of a cool moment that will never be done again for story reasons.