Interesting. So further research has led me to the understanding that the global site tag is used in a different way - while the universal analytics script that is part of Jitsi sets up and records different events, the global tag allows this setup to be done from within Google Analytics itself. It can also probably be done programatically, but it might make sense to have some kind of template for Analytics that works with Google’s global tag. In any case, I’ll try both ways shortly.
In the meantime, what is the standard method you use to track usage?