Ah, but is it safer than having no ATC at all?
These concepts are aimed at providing a level of safety for those airports, for example in Norway, Sweden, Iceland, Australia, Africa etc that have perhaps one or two scheduled movements a day, which currently have no airport based ATC, but those flights are the main link to the wider world due to geography.
The idea is to group a few of these airports together, so a level of remote tower ATC can be provided for that movement.