of course you have to authenticate, but you run all of the software to administer it on a client, not sitting at the console. The console had only the most barebones capability, usually user management. The tools to administer ran on the client.
...it makes sense to have a headless server operating system when you're mostly running commodity spin-up/spin-down headless servers. Microsoft's server operating system was still largely based on the idea of running on a baremetal self-contained box, even though Microsoft servers had long, long since been used in the virtual machine space. If anything they're quite far behind the curve on this.
The Novell Netware model adapted to the VM era is what makes sense, where the tools don't require logging in to the server at all in order to administer the environment.
IBM is and has always been a services/consultant business, even when they made products.
I'm not so sure about the UI. The history of Microsoft and UI for the past 40 years is that they're happy to abandon their incumbent UI for different. We saw that with Windows 3.x to '95 and NT4, with Windows 98 and the integration of Spyglass Mosaic Internet Explorer, with the transition from Windows ME and Windows 2000 to Windows XP, the subsequent further transition from XP to Windows 7, and the rework from Windows 8.x to Windows 10. We even saw it with Windows 10 to Windows 11.
They change their UI because their customers don't see the OS being new/different unless they change their UI. If the UI looks the same then the average untrained end user doesn't know the difference and doesn't see a value in spending the money to upgrade.
So many VPs will be using these to read email and surf teh web.
Unless you use amplitude modulation on the "lazer" and bounce it off the ionosphere.
[Apollo shakes his fists at space going worshipers who ignore him, packs bags for space trippin']
Phat Lazer Beats was that other thug in Mos Eisley.
[settles back in big blue comfy couch and grabs for–]
"Oh, never mind"
"Finger Quotes"
A failure will not appear until a unit has passed final inspection.