I kill tons of people with "Target Finders" and THEY kill ME tons.... whatever.. seriously though try considering Blind Eye, thats about the only tier 2 perk i use... Its not that hard to counter them regardless of blind eye or not, Be careful,Snipe(like me),or....... oh yeah! BE CAREFUL.
Instead of using Cold Blooded, I'd say spam EMP's instead. They render the Target Finder completely useless for a good amount of time.
If you want a good laugh just watch the "spectating" feature and cycle through 'till you you get to the guy using the TF, there will be at least one in pretty much every match. Jagga is right, most of these cats are frozen in a state of tunnel-vision. As for the notion that it's "not" more suited to the LESS skilled, that's ridiculous. The very nature of it's limitations are why most skilled players don't use it, and they are usually skilled enough to acquire targets the old fashion way.
Having said that, it may be cheesy as helll but it's part of the game and it's not going anywhere.