I think the protein aspect of the diet largely depends on your lean mass (muscle) and exercise levels. If I remember correctly, you're at a very low bodyweight and don't do much exercise which would make sense why too much protein could spike your levels.
In contrast, I have quite a bit more lean mass than the majority of people and I exercise frequently. If my protein intake gets too low, my body will start breaking down muscle and I can lose a pretty significant amount of weight (that I don't want to lose). To put it into perspective, I need to eat about 3000-3500 calories/day to avoid losing weight.
Bottom line, I think that's why there isn't more discussion about protein intake on a low-carb diet. It's not that it isn't important. It's that there's a ton of variation in each person's needs