This show is *very* okay. I wouldn't say it does anything particularly well except for animation--the animation is great, lots of hand-crafted rough edges that make it really interesting to watch. Outside of that, it's a silly anime with a silly premise that tries to leverage its simple plot to evoke an emotional response. It's not bad, but because it's not very strong at anything except for visuals, I don't find myself jumping to recommend it to anyone.
The humor is weaker than One Punch Man, despite the premise being similarly nonsensical, which I found disappointing. There were very few times I was truly laughing, it was mostly internal acknowledgements of how silly something was. Because of its premise, Mob Psycho struggles to maintain tension, particularly in the first season, because there just aren't any stakes. It's kind of strange to watch an action/superpower show with the emotional weight of a slice of life anime, which is admittedly quite unique. Over time the plot explores different points of tension, but ultimately Mob Psycho has trouble getting much distance from this core problem.
Does the writing get better? Yes. Overall, it's fine, particularly considering most of the choices seem made with humor in mind. There are some plotlines I liked more than others, but the finale is solid. If Jojo's Bizarre Adventure is "things happening because *something* needed to happen and this might as well be it", Mob Psycho is "things happening because Mob needed an excuse to grow slightly as a character". It's not the best, but it'll do. The finale maintains a consistent feel to the rest of the series, while managing to be a bit more substantial as the plot threads cinch together, and core truths about the characters are explored. Many people would tell you the opposite—that the final season is weaker and more superfluous. Your feelings on this will be up to what you value in the show, and because of the “core problem” I explained above, I think this final season contains some of Mob Psycho’s best narratives.
The animation is awesome, yes. Lots of detailed sequences, plenty of interesting techniques on display, vibrant and colorful imagery… The character designs aren't my favorite, but you can't really blame the studio for that. The opening and closing animations are cool, and the songs are fine--good, even. One of my favorite parts was the unnerving buzzing sound they use; it was effective enough that I never got tired of it. For a premise and plot that didn’t excite me all too much, the studio really pulled their weight in trying to push the anime over the top.
So should you watch it? Yeah, I suppose if you’re already here you’re interested enough. I wouldn’t blame you if you put it down at some point, but it’s good enough to be worth a try.
