Tracking should be removed. Period.
If it's "not a problem, because it's a rare occurrence" then it's not a problem for it to be removed.
I'm not privy to CoH2's internals, but modifying and testing any code is more simply said than done. It's not unlikely that the specifics of Counter Barrage abilities are not accessible to non-developers. Trying to fix what isn't broken often actually breaks things.
These peculiarities are likely governed by lines upon lines of complicated code that few here if any can understand let alone modify. There are no 'free' changes.