The Nexus was introduced in Star Trek: Generations as a thing that doubled as paradise and as a force of nature but Trek Culture has a different theory.
The first film of the Star Trek: The Next Generation film catalog, Generations, introduced fans everywhere to the idea of the Nexus. A temporal ribbon in space that looped the galaxy every 39.1-odd years. It was a destructive piece of property that destroyed without thought and had the ability to rip people into itself, allowing that person to essentially create a paradise for themselves if they should so choose.
That was the crux of the film, an El-Aurian scientist named Tolian Soran wanted to return to the Nexus and was going to cause mass amounts of genocide to get there. It’s a pretty simple premise that Trek Culture dives deeper into and hypothesizes that the paradise that one finds there isn’t what it appears, and instead, as they claim, is more akin to an inflight movie. That the true purpose of the anomaly is to take you to a point in time and space that you wish to be.
An interesting concept but one that lacks enough information to truly argue for or against it.
Part of the issue here is that the host of the video makes some bold leaps to assume what Soran knew or didn’t know. In fact, the film clearly depicts Soran as someone who wants to live in the Nexus, not use it. He has no desire to save anyone from anything. That was the whole point of the movie, that he was so grief-stricken that he’d do anything to get back to paradise, murdering hundreds of millions in the process was no big deal because to him, life was meaningless.
Guinan herself claimed that if anyone (Picard) went to the Nexus, they wouldn’t care about anything other than getting back to the Nexus. So he wouldn’t actually care about getting his family back or stopping the Borg, just returning to the Nexus. If you’re pitching a hypothesis around flawed arguments, then you can’t save for certain that your theory holds water.
The theory has promise, but it needs further exploration in cannon to be anything worth truly arguing for or against.