Persona 5 is such an interesting case, as it's amazing as a final product, and upon finishing first playthrough you can only love everything this game gives you, from the amazing music, to the creative character design, to an interesting story full of great themes and lovely characters. BUT, once you tap into the rest of the Persona games, and get back to it, it starts falling apart, you can see the holes in it's writing, it's empty characters, unexplored themes, among other things putting it down.
Style over substance, would be my way to put this game, a lot of great ideas, but very few really explored and some explored very poorly.
This is an amazing game, objectively, and Maruki is worth every minute you spend playing this game, but it's definitely a weak entry for the persona franchise.