Like the title says, it's not really something that complicated and I can't imagine it would be that hard to implement. While the cases of wanting to turn off the skin exclusive sound effects are probably slim, it could've been a miss click...

Dear raze mains, When you are on my team, would you mind NOT tossing a grenade towards a doorway that you can SEE I placed a tripwire on. I have a one way set up to destroy them if they push in, please just put your grenade a little fur...