Also, the website talks about M.2 for the SSD form factor. M.2 describes a physical connector standard. I would imagine that's enough to imply that it's not soldered SSDs.
ECC RAM has its advantages but I agree it's not a must have for workstations. DDR5 has on-die ECC, which is basically controlled by the RAM itself and not everything around it like with regular ECC.
Also, doesn't DDR5 have built-in ECC?
Also, the website talks about M.2 for the SSD form factor. M.2 describes a physical connector standard. I would imagine that's enough to imply that it's not soldered SSDs.