I am an engineer, I have changed engines in a couple vehicles, I used to do all of my own work on my vintage Triumph motorcycles. And when it comes to bicycles, I used to work in a bike shop. My last three new bikes were not new bikes, but were new frames that I built up. This included buying the spokes and lacing up the wheels myself. Thus, I never had any Rohloff anxiety the way you describe it because if something does not work, I am used to fixing it.
On my Rohloff bike, I bought the frame and fork that had the cable fittings for the EX box, thus that is what I have.
What you referred to as getting out of syn, or when I put the EX cable box back on the Rohloff and it is in the wrong gear. It is so easy to fix, that it has not forced me to try to learn how to prevent it. Two days ago, I put the EX box back together after changing cables. I of course had forgotten to leave my gear in 1 or 14 before disassembly. My highest gear after re-assembly on the shifter said it was gear 12. So, I took the EX box off the hub with it still in that highest gear, turned my shifter from gear 12 up to gear 14 and reassembled. And it works fine, I now have all 14 gears. No big deal.
I prefer my bike forums to be free of politics, please do not name any political figures here in the future.
Regarding spares, on my Iceland trip I brought the sprocket removal tool because Thorn says you should carry it. But no chain whip or other big wrench, so other tools would have been necessary to remove the sprocket. I also carried one spare cable that was not cut to length, a low quality cable cutter that hopefully would have been up to the task, two plastic drinking straws that were 100mm each.
Topics not mentioned by you, but I will add:
1. Some have complained of wearing out the shifter rubber grip. I have not worn mine out or even had noticeable wear, but I did add a bead of Shoe Goo to it because when my hands were wet and slippery, it helped me get better grip on it. If you try this, start out with just a little, it is easy to add more later if you desire.
2. If your writing is to be on Rohloffs, you should mention the belt drive option. Although that is largely unmentioned on this forum because Thorn does not use belts, when I was in Iceland I saw a total of six other Rohloff bikes, two of which were belt drive. Some of the bike manufacturers are jumping on the belt bandwagon, so that is a topic that warrants some review. One of the belts of the two I saw in Iceland was the older type, the other the newer type. The owner of the older type said that the newer ones he had heard required a very accurate chainline. He also said that he thought that the belt added more friction compared to chain. One of the belt owners said he was carrying a spare belt since they were not sold in Iceland. I have no opinion on the chainline (or is it belt-line?), I am only repeating what I heard.
3. I prefer chain over belt, I use a different chain ring for around home use than for touring to get a different range of gears. A belt drive would complicate that since you can't add a few links to a belt.
4. When I changed the cables a couple days ago, I used standard 1700mm cables, I think they had the Shimano heads, the head was 4.3 mm in diameter. I found that my cables were slightly too long. Instead of cutting the cables shorter, I added about 1 to 1.5 cm of outer housing instead to get the cable length right. (I used electrical tape to tape the housing together.) This way, when I carry a spare cable, a 1700mm cable (hopefully?) will be exactly what I need without needing it cut.
5. My only Rohloff anxiety was ordering it and triple checking to make sure I was ordering the exact one that I wanted (skewer instead of solid axle, 36 and not 32 spoke, EX box, black, non-disc, type of frame/torque arrestor) since I was ordering it from a seller in a foreign country, thus returns would be complicated. They have many options that make ordering a careful process to follow.
6. Cost in USA is absurd. I ordered my Rohloff from a seller in Germany because the exclusive USA distributor charges a horrendous profit. After I got it, that seller in Germany apparently was told not to compete with the monopoly in USA, so that seller will not ship to USA anymore. The cost of the 250 ml oil in USA is about two and a half times as much as I paid to a seller in Germany that shipped it to me in USA before they stopped selling Rohloff stuff to USA. And people wonder why you almost never see a Rohloff in USA? A neighbor of mine is a bike shop mechanic in a large shop, and my Rohloff is the only one he has ever seen, there has never been a Rohloff bike in the shop where he works. If the prices charged for Rohloffs in USA were competitive with prices in continental Europe, maybe they would sell a lot more in USA.
7. And why did they use a Torx wrench size that is not used by anyone else on bicycles? I carry the wrench (that I had to buy) with my tools and spares, but I did change two of the bolts (on the shifter) to normal Allen wrench bolts.