They're already using a literal phone soc that HAS CAMERAS. Having two color cameras on board probably would have cost much much less than an external, $150, third party module, like maybe a tenth of that at scale so like maybe $15 more. OoooOOOOOooooo scary

They likely made compromises like this all over the device to keep the price as low as possible, this (and the ergo pack) is just one that they errored on and probably should have just included.

Like the other guy said, using color cameras would not have costed much more. This is an expensive device with some budget entry-level features. There's no excuse.