Good point Nako, and yeah ive had similar experiences before with great manga that use crude devices when they have a perfect story. I'd say though this isn't one of those. It's very interesting setting and cool arc but the story never really takes itself too seriously، it's chill and goes at its own pace - and honestly that works do well you forget where it could do better.
It's literally been like this from the beginning and as long as her character doesn't take up too much time or remain, weirdly, with her current personality it should be OK