*Sigh* Always with the cloaks. It's above our pay grade.
Honestly, as useful as they could be in a practical sense, it's that VERY practicality that makes disavowing them a major political talking point. You don't need to worry about the Federation skulking about and picking off your trade fleets because they can't. It elminates the Federation from the pool of suspects in a lot of situations and makes trusting them a lot easier. I can see whey we'd WANT them, but I also see why the diplomats were willing to trade the use of them away in treaty talks. But I don't doubt the Federation KNOWS how to make cloaking devices. They just don't.