Since the current behavior is not technically wrong, and your suggestion would introduce an IMHO worse wrong setting, I propose to leave things as they are for this upcoming release, and discuss the intentions and workings of the EpicsHostArch script more broadly.
I believe a user tool should focus on user friendliness and try to come up with the best setting for the EPICS build in the context it is being called from.
Since the current behavior is not technically wrong, and your suggestion would introduce an IMHO worse wrong setting, I propose to leave things as they are for this upcoming release, and discuss the intentions and workings of the EpicsHostArch script more broadly.
I believe a user tool should focus on user friendliness and try to come up with the best setting for the EPICS build in the context it is being called from.