Aren't made to literally silence the gun - No, you're right, they're made to defuse sound so that it's harder to locate where it came from; helpful for when you don't want a counter-sniper hunting you down.
Tell me when this has been used effectively - speaking in terms of a military battle, I have no answer. They're too bulky currently, and are just too difficult to utilize in combat. On base, they're used so that everyone within a 10 mile radius doesn't have to cover their ears. Is it stealth? Not really, no. Is it significantly quietER? Yeah.
Not all frontline troops wear ghille suits dumbforget. - I never said they do. Nor did I say front-line troops. I said marines. More specifically, marines operating within heavily wooded areas where a ghille suit can hide your profile. Is it possible to detect them still? Yeah, body heat or sound. But nothing is 100%, so that's to be expected
Nope. If that were the truth everything would be stealth. - Just like how the raid on Al Qaeda's compound was spearheaded by a fleet of tan- wait no, it was a couple guys doing a quick in-and-out with specially modified Blackhawks to be quieter... A stealth mission?
AC-130s don't drop bombs. -

Same thing with a B-2. - You've got me there. Assuming a B2 Spirit is at it's highest speed (mach .9) and a Patriot Missile locked onto it (mach 5), yes, it would be lights out for the spirit. Hence the reasoning to get in and get out.
article/link - Genuinely interesting and it kind of does squish my points, but with the advancement of detection, can come the advancement of stealth technology. I refuse to believe we have reached the peak of our ability in terms of stealth technology, strictly because... well, that's not logical. Look back 50 years and computers filled entire rooms. Look back 100 years and planes were still a new concept.
~classified information~
wut