Looks like it was addressed with different lengths being available, however looks like a proprietary connector.

https://api.starlink.com/public-files/Accessories_Guide_Rect...

Yeah I have the first gen dish, and about 60 feet of network cable from the dish spooled up in a closet. It's not very tidy and sort of a pain to deal with. I could probably cut it down and put a new end on it, but I worry that shortening the cable will screw it up, or it'll screw up the PoE since it's not really 100% standard PoE (so I've read) to the dish due to the higher power draw.

Yea, it appears to address that, but the new cable doesn’t seem user replaceable/fixable and it doesn’t appear possible to extend it, as the original cable was (albeit with difficulty).