There’s also big money in it. BBC (and related) Science loves this stuff.
The public loves stories of multiverse, parallel dimensions and such. I ate this stuff up for years myself and enjoyed it all. One day though I started to give it a more critical eye and I had to accept that it was mathematically supported fantasy until there is empirical evidence.
There’s still a piece of me that wants to hope that stuff is true, but it’s the realm of a religious wistfulness rather than something scientific.