If you had searched the forum for it, you likely would not have found it as a RPI 5 item.
But my guess will be, since it uses usb3 that you may only have a capability of one URI and as many DAHDI hubs as you can otherwise create.
But I don’t know that for sure.
But that will be addressed in the next release I think which wont be anytime soon.
Likely though for anyone experimenting, you would need a compatible rasbian os for the 5
(not sure which are but I would assume rasbian 11&12)
and to install/compile from source as you are doing in the link so DAHDI is compiled in that kernel.
Just a little extra info for understanding…
And a last minute note…
If you do an OS update/upgrade, and it breaks ASL, re-compile DAHDI …