Hello, I asked our structural engineer, Figure 2 your installation method is very correct, this thick part is in contact with the card slot, so that it does not slide, play a fixed role.
@Akuma540 I noticed the cable pops out of the groove under the hinge after putting the HMD on and off several times, the cable would be more prone to flex and fail internally due to fatigue that might be why.
As for your solution I think it would expose the connector to stress sideways when tugged which could damage it and that is harder to replace than a cable.
thats what I had on the curve and when I moved I saw it bend a little, so I choose to change it. It looks like its ok from Engineersside but I wanted it to look more safe
I’ll keep an eye on it and see how it fairs, it’s just the cable sleeve folding a bit from the friction fit I doubt it will cause any issues unless something in the mechanism causes the cable to pinch.