Personally, I don't care if show folks want to use carriers for their stock or not, but I do believe there should be a method that would make other folks aware that a particular animal is Free or a Carrier when that animal is offered for sale to the general public, such as at a sale barn. How this would be carried out though....I have no idea. If a cow or a bull were to be guaranteed to go to slaughter, then this is a non-issue, but often it's not, and an unsuspecting buyer is potentially bringing a "defective" cow or bull into his or her herd, but has no idea they are doing so.
Not sure why the personal attacks are out there, but that's someone else's beef, not mine. All I know is most people, especially small time hobby farmers have never even heard of THC or PHAC, so they would not be looking into a cow's genetics on a spur of the moment purchase (sale barn). It's easy to come up with an opinion, but not so easy to come up with a logical solution.