I took the camera cable off earlier (step 6) and was glad I did but there seemed to be no real reason to take this cable off. I kept it on and there was no problem at all.
Just did this. I elected to actually do this step and I’m glad I did. It was no big deal. Just pull straight back from the socket (not up or angled!) and although it was a little tight, it came out. I think it’s worth it not to possibly mess that cable up when you extract the drive. The drive itself does not lift up straight out- you have to work it out as there a few minor obstructions. At that point, it would be very easy to damage the camera cable. I took all the antenna cables off even those this guide only recommended taking off the long cable. This was due to an Apple repair video I had seen. This proved to be unnecessary and I should just have stuck with this guide’s recommendation. I did skip taking the woofer cable off towards the end of this guide as that seemed to be, and subsequently proved to be, utterly unnecessary. All in all, just moving slowly and carefully I managed this in 30 mins though next time will be faster, no doubt.