I don't understand the dislike for this arc. This manga began as wacky hijinks in the demon world with the serious bits still holding a trace of that humor. This arc is completely within the expectations of I've come to have for this story.
I get wanting a more serious arc or perhaps something...
People not liking this arc because it feels dragged is because the the subject isn't your preference and because y'all ain't used to a weekly format anymore.
I know everyone wants more progress, but I love the misunderstandings and inner monologue moments. This is what makes this story different from others and more interesting for me.