If you push too far down that line, QF will say the pax is not independent and requires a carer.
[URL unfurl="true"]https://www.qantas.com/au/en/travel-info/specific-needs/travelling-with-specific-needs/travelling-with-a-carer.html[/URL]
Although at least they get a discount.
Not to say disabled people need a carer - plenty travel without one - but there has to be some degree in autonomy. Ground staff will push the wheelchair.
That said, the scenario you list is untested, they might show latitude in this situation.
