I'm not aware of anything specific with Specialized and I don't know what you mean by them dropping road tubeless - in generalities no one in this business is "dropping tubeless" or ever will. They especially wouldn't over this specific issue as it's a non-issue. You build up the tensions on the wheels to compensate for the drop. The only time we have ever had any issue is on super tight rim brake frames as the dish can move over ~1mm and sometimes that's enough to cause rubbing as everyone wants to run tires their frames weren't designed for nowadays.