Right? When a film takes off and the music has a pretty distinctive style/flavor to it, it would make sense to keep the same song writers and whatnot. But if you bring a different artist into play, they can fall into the trap of having that artist try to emulate the previous one. And as I learned with Wish, I'm not fond of others trying to emulate LMM's style.
The new song writers for this are apparently Abigail Barlow & Emily Bear, who are most known for the Unofficial Bridgerton Musical. Great for them and all, but this can go south real quick with the shoes they're trying to fill.