A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate
in the Unity community.
Discussion in 'Unity Hub' started by Claytonious, Nov 13, 2021.
Why in the world?
Hub version 2.4.5 on Mac OS X 11.6.1.
(Source: Hub FAQ thread)
While it says Mojave there, it also applies to newer MacOS versions as Apple has started to tighten up security since Mojave (read this news).