Usually we ban stages that can potentially invalidate characters due to degenerative strategies (see: KJ64). Peach, or any character with similar issues in vertical mobility (So basically every character not Fox/Falco/Falcon/Marth/Sheik/Pikachu and maybe Mewtwo) should get bopped by DL/Battlefield camping.
Top platforms on stages like Battlefield, DL, Yoshis, and FoD have honestly served no purpose other than camping, creating breathing room, the occasional extended combo, and giving a couple of characters an extra recovery option (probably just Fox and Pikachu though). Outside of a handful of scenarios, it pretty much never comes into play and only aids characters who are already good.
Though they tend to polarize a lot of MUs involving fastfallers (good and bad) FoD, FD, and Pokemon are probably the most "balanced" stages in the game because they are the hardest to camp on. You could make an argument for YS as well, but the stage honestly only favors Marth, Fox, Falco, and Yoshi to varying degrees.