I don’t know if it’s sexism or not but is it possible that Fitbit and Apple Watch aren’t so good at tracking your movement/steps when your arms are stable whils

I don’t know if it’s sexism or not but is it possible that Fitbit and Apple Watch aren’t so good at tracking your movement/steps when your arms are stable whilst pushing a pram? I think a lot of the data comes from your vertical movement as you walk. Maybe they just can’t track it.