And the thing is is that this is suppose to be able to pull off material back to the 4-bit era, on up to the 32-bit era.
Early 8-bit era, there was no 4-bit era as there were no 4-bit home consoles. Just different generations of 8-bit. Someone not familiar with the hardware assumed "Well the graphics are worse than the NES, which was 8-bit so everything before must be 4-bit" and put "4-bit generation" out there, and unfortunately it's been regurgitated by some ever since.