I often wonder how much is more to choice of activities available.
DD loves dance, gymnastics, trampolining and swimming. She hates any form of team sport, tennis, badminton or anything else ball related. She was on the school‘s gymnastic team. It took years before she was able to throw a ball decently.
Obviously there are only so much schools can offer but one-fits-all doesn‘t work for all. With most state primaries not able to offer facilities like private schools, some girls will not like PE/being active.
DD was more than able to run around in breaks/lunch in a dress/skirt and PE kit was comfortable in primary. Girls do get less active in school PE the older they get, some get their periods in Y5/Y6 and aren‘t happy with having PE with boys who often start to be more aggressive and bold playing football, hockey or even rounders.