Harry is kinda useless though tbh

Harry had a natural talent for magic and a lost soul for anything else

Harry was the opposite of useless.

Harry is useless? He defeated the most dark wizard of all time, so I don't think he's useless.

It might be because when he was in the muggle world he wasn't really allowed to live normally in it and he never really lived fully in the wizard world so I guess it makes sense.