It's definitely worth watching. It's not that it really resembles Morrison's works, but it has a level of weirdness and unpredictability which reminds of Morrison's early experiments, before he fell into the trap of metacomics and postmodernism that IMHO has become really repetitive from a certain point of his career on.
That's actually an interesting detail about mangas and animes - there are thousands and thousands of works, but as far as I know almost none of them relies as heavily on postmodern metacommentary as some late Alan Moore and Grant Morrison works do. It's not that they don't have models or sources of inspiration (Chainsaw Man is basically an update/variation of Go Nagai's Devilman and a lot of elements of Berserk's horror mythology are inspired by Clive Barker's Hellraiser, especially on a visual level), but their primary aim is always the story itself, not the commentary on pre-existing stories. To a degree, it's a situation similar to Victorian and Edwardian literature - there were a lot of epistolary novels which may have closely resembled each other, but not a novel ABOUT epistolary novels (as far as I know).
Again, that doesn't mean that animes/mangas can't be repetitive (some of the most popular mangas, like Dragon Ball Z, are repetitive as hell, and to a degree it's one of the keys to understand their success) or they can't explore different points of views about specific topics or subgenres, but they always do it in a very peculiar way. For example, the original anime Neon Genesis Evangelion is a variation on the mecha genre (teenagers in huge robots, basically), but it is done in an extremely original and disturbing way, with a narration which is progressively more fragmented and references to real-life events like the 1995 Tokyo sarin attack. Or Urasawa's Pluto, which is a remake/update with cyberpunk-ish elements of a classic Tezuka Astro Boy story. Even people like Satoshi Kon, who was a hugely creative director of animes and often broke the fourth wall in his movies, but not just to express his own opinion/commentary in a, let's say, Morrison way.
I deeply admire Moore and Morrison, but IMHO it's hard to deny that the late chapters of LoEG are basically 50% a pop culture encyclopedia and 50% Moore's personal (and - to a degree - debatable) rant about what works and what doesn't in comic books, movies, music and literature, with a non-existent or almost unreadable plot. As for Morrison, I bemoan the times when his works were not a deconstruction of deconstructionism or the umpteenth, modernized riff on a pre-existing and well-known comics trend.