The Orin series and later use UEFI and you can apparently run upstream, non-GPU enabled kernels on them. There's a user guide page documenting it. So I think it's gotten a lot better, but it's sort of moot because the non-GPU thing is because the JetPack Linux fork has a specific 'nvgpu' driver used for Tegra devices that hasn't been unforked from that tree. So, you can buy better alternatives unless you're explicitly doing the robotics+AI inference edge stuff.
But the impression I get from this device is that it's closer in spirit to the Grace Hopper/datacenter designs than it is the Tegra designs, due to both the naming, design (DGX style) and the software (DGX OS?) which goes on their workstation/server designs. They are also UEFI, and in those scenarios, you can (I believe?) use the upstream Linux kernel with the open source nvidia driver using whatever distro you like. In that case, this would be a much more "familiar" machine with a much more ordinary Linux experience. But who knows. Maybe GH200/GB200 need custom patches, too.
Time will tell, but if this is a good GPU paired with a good ARM Cortex design, and it works more like a traditional Linux box than the Jeton series, it may be a great local AI inference machine.