The point is that she wasn’t happy being good at school, she would have rather been taking photos and making friends. In contrast Shirogane was perfectly happy being good at school, so it isn’t even saying that people can’t be happy being good at things, just that people should be happy doing...
I’d say it does a better job than most manga of the sub-catergory “leaving my party/old life.” Mostly because the “villian” (the alchemist) actually caused a problem that the MC needs to overcome mentally, instead of just being the guy getting karma’d. His OPness doesn’t help him solve his...