You kinda do though. It’s like the difference between Cat5 / Cat5e / Cat6. Physically they all have the same Pin outs, but the tolerances vary greatly. Could you get 10Gbps on Cat5? Possibly, but only over short clean distances. You can do it more easily on Cat6, even though they all plug in together. The HDMI cables are the same way.
You kinda do though. It’s like the difference between Cat5 / Cat5e / Cat6. Physically they all have the same Pin outs, but the tolerances vary greatly. Could you get 10Gbps on Cat5? Possibly, but only over short clean distances. You can do it more easily on Cat6, even though they all plug in together. The HDMI cables are the same way.