It's not really BS,, you said it right here;
Is this just a liability issue
I don't know of any factory built rifle where they'll tell you to just go ahead and pull the breech plug any time you want,,? Or give you instructions about how to go about doing so.
I'm trying to figure out why anyone needs to pull it?
Like TC, It's a prioritized thread,, it's not common,, you can't look in a Track catalog and order another breech plug that will just screw into the barrel