Funny enough, I actually had a very long discussion with a car harness company owner about this a couple of nights ago over the phone because he was removing the rear's off of some of the harness's. He wasn't aware of this either and after talking to him about it, he was like that actually explains some things he had been seeing on a prototype vehicle of his and is now wanting to do a warning vid about it so people are aware of what altering certain things with these newer platforms can cause. Takes a whole lot more than just killing dtc's to get around this. I was just fortunate enough to talk to the right people myself that filled me in on it.
The OP's cal has the cats killed but all other corresponding test are still enabled. Test seem to prioritize over the component settings. So set it to not have the component only and the test and other operations will still run as if it was still there. Only way to do it right is to remove the component then kill the test along with some other corresponding operations that pertain to it. I found all of this out the hard way. AND this is for off road operations only of course
Otherwise, the best option for everyone else is to leave the cats and learn to tune around them, which can be VERY hard at times on its own.