I think by definition that it must mean that as its clearly stated on buses that wheelchair users do get priority over anyone else, and rightly so to be honest however I do feel its unnecessary to pitch children in buggies against people in wheelchairs and therein lies the problem. There is probably enough space on an average bus for one wheelchair and two single buggies if certain poles etc where removed.
By the same definition, buggy users should be able to occupy that space if not occupied by other buggies or wheelchair users. That should be reinforced by drivers and bus company legislation so that young children- not buggies- get the priority and respect that they need on public transport. Too often passengers do not move along and are instantly irrirated when a parent with a buggy tries to get on. I do think that the challenges that parents have on that front tends to worsen their behaviour when challenged.
Carers with double buggies and twins/two children or more also need further consideration on buses as they are special cases as most double buggies take up as much room folded up as they do when upright and its just impractical to do in any case and certainly not safe to sit and hold two or more children. Assuming they get a seat either.
Theres nothing mentioned in all the media coverage about parents with young children being given priority seating either; are they expected to stand and hold these young children?