I was checking in at the kiosk for a recent flight then went to the auto bag drop and somehow walked away without checking by bag was injected down the belt. Another pax came up to me to let me know then she had issues herself as she'd done a mobile checkin but went straight to the bag drop thinking that the bagtags printed out there so I then helped her get a bagtag from the kiosk.
Good question because service desk staff & sales desk/ticketing staff were on a higher pay scale than checkin staff/roaming staff so any task previously done by the former group would probably now need to be done centrally by staff on the same or higher pay scale then the checkin/roaming staff at the airport so the latter may just be reprinting a new boarding pass and giving to the pax. I don't know for sure I'm just thinking out loud.
I really don't think they would send people landside unless it was a situation where the pax had to retrieve their luggage due to an overnight disruption. Qantas LInk Dash8 & 717 flight disruptions
may still be handled by their own QLink airport service desk staff as they're on a different pay scale to QF mainline staff however I don't know what their plan will be & whether they're doing a similar restructure like mainline.
QLink currently manage their own disruptions eg flight delays & cancellations in addition to the scenario where pax misconnect
from a QLink flight to a mainline flight and need to be rebooked eg if you were travelling Moranbah-Brisbane-Sydney where you missed your BNE-SYD flight as a result of QLink being late then they do the BNE-SYD rebooking including a hotel booking if the next flight is the next day.
While that service would definitely come in handy for someone wanting to purchase a ticket I can't see them being as enthisiastic about taking up the offer when it came to paying for excess baggage or heavy charges.
While at a lot of airports WCHRs are stored at or adjacent to service desks, it's the commissionaires who transfer pax from check to the gate or between flights (at domestic airports) not service desk staff. There haven't been any service desk or sales & ticketing staff on shift since late March. From what you've described it doesn't even sound like the WCHR request was in the booking.
Even if pax have boarded the flight without assistance from staff the CSM would see the WCHR request on their ipad plus it's also on the manifest and generally always ask the pax what assistance they need on arrival eg do they need an aisle chair all the way to their seat vs being able to walk to the aircraft door and get into the WCHR in the aerobridge.
If flights are cancelled or changed the WCHR request is cancelled too so must be requested again for the 'new' or rebooked flights. If unsure one is booked ask the staff at the departure gate if the WCHR request is there and if not they can add it in so staff on arrival know about it. The request should also print out on your boarding pass too.