Another thought on the @apertus is that they are using high end components. This is professional-grade gear.
Comparing to computers (even though it basically is one on its own), the comparison is not hobbyist single-board computers.
The better comparison here is some insane Pogo Linux Server or as System76 powerhouse laptop or workstation.
I can say right now the hardware itself is top notch, and they are continuously improving the software
(This is, BTW, like every other pre-production OSHW product I've had the privilege of testing)
So, I'd say they are very much on track, and even ahead considering how much progress they've already made on documentation
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