Can't see the source
Probably the board schematic… what a joke
If we want truly open-source hardware we'll have to go back to relay computers. Everything beyond that is "a joke".
It’s a flawed surrogate of course - lower performance and higher cost than an asic produced at volume - but the open source hardware aspect is very strong.
however awesome an open source fabbed asic or fpga would be of course.
Actually, it's not open unless you can make it from hydrogen atoms.
There are degrees to things. It's not cool to try to claim the prestige of "open source" when the entire board is nothing but a vehicle for your very-much-closed processor design.
You can get the board design and order it manufactured yourself, or you can change it to suit a different processor that's more open.