Hi Tulchan, welcome to the forum. It's highly likely that VCM, causing the engine to burn oil, is what caused your catalytic converter to go bad.
Take a look at this thread for more information:
www.odyclub.com
Highly recommend that you disable the VCM on your 2012.
Take a look at this thread for more information:
PISTON RINGS/MISFIRES/FOULED SPARK PLUGS - The VCM mega...
This thread explains all the key details regarding VCM. Rather than re-explaining everything about VCM to every new forum member, they can simply be directed here. Self-service FTW! While there will be plenty of discussion in this thread, this first post contains the key information, so reading...
Highly recommend that you disable the VCM on your 2012.