I don't recall ever suggesting ousting or contemplating ousting a wheelchair user so that I can get on with a buggy. However the decision as to whether I would disembark to allow one to take the space my children occupy would depend on a number of factors but the priority would be the welfare of my children.
The fact remains that in the hierarchy of need, children in buggies come second to wheelchair users, but having done some checking, buggies then take preference to ambulant passengers so I do have the right to ask passengers in that space to move aside to let the buggy into the buggy space. That space is actually for both wheelchair users and buggies.
The greatest obstacle to wheelchair users on buses appears to be the attitude of other passengers , not buggy users who also don't appear that willing to move along or to get off to enable wheelchairs to embark. Again, it would be commonsense and sensible to do, as they seem to have done in Brighton, to take out more of the seats to accommodate more wheelchair users and buggies, thereby removing or at least reducing the problem.
Its a shame that challenging what are clearly misogynistic and child hating views is called rude whilst the original sentiments are considered acceptable but there are no surprises there really.