I don't play clan wars so will defer to your experiences in them. I can see where you may have that situation but how many times does that happen in a game versus how many times PT give you valuable information -every time you are spotted. I don't run PT because I enjoy sailing broadside derping around all game in my cruisers not looking at the mini map. I like to play up on caps early game to support DDs and it can give me great information on what may be ahead (do I need to move away versus towards that cap), is the line I am taking to that cover putting me at an angle that exposes me too much and/or did that DD just fire torpedoes if it shows a 1 or not while they remain hidden as just a few examples. It continues to be useful all game many times when you are spotted. I use it as a utility and find it invaluable.
There are ships I do run it on (Zao) but I also wouldn't give up PT for it. Just different ways we approach the game. Thank you for giving the other side of things and another perspective.