As far as I know it's not only 'pram users' parking, it's parent parking, i park there all the time and not always use a pram
Ditto to that!

I think the pram symbolises that it's a parenting spot but doesn't define the only users can be pram users.

If one subscribed to that logic then that would mean that only a disabled person in a wheelchair can use a disabled spot as that is the logo for disabled persons, and I'm sure no one would say that to a person using a walking frame!