It's a great film, tackles nihilism and existentialism, it's not a rip-off of MCUs Multiverse, they just made it for what it is. A lot of people says they find a hard time understanding the point of this movie. Sure, it can be, because it needs more understanding than a casual movie, it's "multiverse" sci-fi, or fantasy, but they did shed good light on family, financial problems, living the life you wanted to have, the chance to live a good life,
The closest multiverse I can compare this to is to Rick and Morty's. Only this tackles nihilism better. It shouldn't be the lifestyle, but only a phase for a better outlook in life, and existence.