I think it's really fitting that Weird Route skips Flower King
I don't know about a lot of people, but I ended up playing through aborted weird route for Chapter 5, meaning I played through the Flower King dark world on an aggro, no recruits playthrough.
Contrarily to the end Chapter 3 and Chapter 4, which had enemies you could only beat by fighting (The Roaring Knight, Gerson, The Titan) Chapter 5 has a TON of battles you can only beat by acting.
Full list of battles in Chapter 5 that can only be beat by acting and is impossible to beat via fighting:
. Yellow and Blue
. Aqua and Netskie
. Orange and Green
. Seth and Shinobeetle
. Pink
. Flowery
Curious enough the only boss battles in the entire chapter that can actually be beaten through fighting (excluding bullet patterns) is Aqua, then later Aqua and Seth, then at the very end Seth and two Shis. This makes sense as these battles all involve either Aqua (who thinks fighting is a game) or a regular recruit enemy (all of which can be fought).
I know a lot of people were initially surprised that the weird route skips this chapter's dark world completely, but I think it makes sense. Flower King might be the most lighthearted dark world in the entire game and consistently forbids fighting, so the weird route skipping completely past this section is very fitting.