When people are making IDs it might be useful that they can get as much distribution information as possible - many species on iNat still have gaps in coverage [particularly outside of north America]. GBIF helps fill in the gaps.
At the moment you do not see the GBIF data and you have to turn on the GBIF data for each map individually: https://www.inaturalist.org/observations/identotron?observation_id=49603263&taxon=51468#establishment_means=&order=&place=97392&taxon=51468
Alternatively you could have a single button to toggle the GBIF network data on all the maps shown in the Identotron in one go.