So? It's still rack-mountable workstation-class hardware that will probably be running on Apple Silicon at some point. And it will probably be possible to boot Linux on it, similar to existing M1 Macs. That's pretty indistinguishable from many servers.
You seem to be thinking that a server and a workstation are the same, ignoring that server skus need oob management, apis, hardware support and so many other things as table stakes
Not all of it, and not necessarily well, which was one reason they weren't super popular except for the case you really needed Apple software. It seemed more aimed at the "I want to colocate a box somewhere and I run Apple in the office and I might also want to in the datacenter for some reason or another" rather than "this is a solid platform that offers all the bells and whistles I would expect because I'm deploying tens or hundreds or these".
