Oh no, please don't buy into that conspiracy theorist BS. Someone on reddit started a rumor about some JJ Abrams cut, and that the studio stepped in to make drastic changes to the movie. It's the same kind of nonsense that happened when DC movie fans started clamoring for a so-called "Snyder cut" of the Justice League movie.
No, I am not buying into any conspiracies, but I totally believe Disney would hedge their bets after "Solo" underperformed by making sure the movie could squeeze one more showing in per day to bolster the numbers, rather than play as a 3-hour movie with some time for scenes to breathe and plot threads to come to a conclusion. I am not saying it was done for any of the conspiracy reasons, just the number-crunching Disney math. I am leery of thinking that it was done behind JJ's back, but I can buy that in the end he was not in charge of the final edit. The most telling part for me is that JJ intended for Finn to tell Rey he is Force-sensitive. If he was going to cut the reveal, I have to assume he would go back and cut the teases leading up to it as well. That is kind of basic storytelling there.
To me this is totally different from the Snyder Cut situation, which would be more analagous to what happened to the Gareth Edwards cut of "Rogue One" before Tony Gilroy reworked it with rewrites and reshoots.
This is more like Peter Jackson's "extended cut" of the LOTR films, where the vision behind the story is the same but things are allowed to unfold a little less breathlessly. I would happily plunk down cash either in a special theatrical run or a home video release to get to see a "less compressed" version of the film.