Tailoring in DDA is currently broken in a number of significant ways.
Most obviously, it's simply way too good, it is preferred over scavenging, which should dominate acquisition of clothing.
There are several contributing factors to this.
Crafting times are incredibly low compared to reality, leading to the time investment of crafting being depressed. At the same time, the supply of clothing is quite low compared to reality, leading to much extended times required for scavenging.
Material requirements for clothing crafting are abstracted a great deal, leading to a situation where nearly any source of cloth can be disassembled and then reassembled into any article of clothing.
Additionally, assembly (stitching, cutting, etc) is highly abstracted and acts as if the survivor is able to perform these tasks at a professional, machine-assisted level.