No front desk and iPads aside, I believe the bigger push is to get guests to self-check in and use the phone digital key to access the room. Thus, lessoning or perhaps eliminating the need for staff at check in (cost reductions).
This works well so long as the Wi-Fi works well. At Aulani it did not and was a known issue with site maintenance. Physical key cards were needed in some room areas. I don't think that is the case with BLT.
Desk or no desk I still prefer someone in the lobby for check in. There always seems to be one random question that needs answered or need addressed.