First, you're confusing "hand rolled" with the terms the OP used: "hand-created" and "hand-built".
Second, look at your own Wine Dark Rift. You rolled ports and space lanes by hand, next used a program to create the raw UWPs, and then adjusted some of those UWPs by hand.
So why don't you tell us why the emphasis on by hand?
I read the initial post "you created, by hand, from scratch, starting from a completely and totally blank subsector grid" as take a piece of paper and pencil, roll dice, look up on tables, change as you see fit.
By that criteria, the Wine Dark Rift isn't hand crafted. But as you point out, there is a lot of hand crafting in the making of the Wine Dark Rift. So sure, if that's the criteria, then I've built a bunch, at least 5+ (the three Wine Dark Rift plus an earlier attempt, plus who knows how many done with paper, dice, and pencil lost to time).
So to answer some of the questions of why I hand crafted stuff...
The Wine Dark Rift got it's origin in riffing off Christopher Kubasik's (creativehum) examination of The Five Sisters and for my purposes, expanding that view into District-268, and then a bit larger to get the whole J1 route around the rift, and then a bit larger to take in some adjacent things. Then deciding I didn't really want to deal with 3I "canon" buffs, plus I thought it more interesting if the "Imperium" came into the rift from the bottom instead of the right. So I sketched out a rift on some hex paper and then started rolling world locations and star ports, and then the space lanes, making a couple tweaks there to make things "look good" and be assured of a J1 route around the rift. Then I turned to the computer to spit out UWPs. As mentioned, I made some tweaks to reduce the TL of some worlds. I made other tweaks so worlds would match up with those in adventures I thought would be fun to use. I also reserve the right to change UWPs in the future as I develop more worlds for actual play.
So why? Because while random generation is useful to spark imagination, sometimes the imagination so sparked doesn't quite match what the dice (or computer) spit out or maybe I just can't make sense of a particular UWP. Or maybe someone puts out a really cool adventure that would drop into things and there isn't a suitable UWP in the area, so out comes the chisel and file and a UWP is changed so the adventure fits in.
Frank