As an amateur following this thread, Im beginning to think that those of us who are casual or light users such as web surfing, e-mail, texting, etc. aren't seeing the problem because we aren't stressing the device. Those who are professional users and are attaching all kinds of equipment are getting the crashes and when they get a replacement the same thing happens because their use hasn't changed. It would be unlikely for the majority to have no problem and a few to be unlucky enough to keep getting multiple machines with the same flaw. Unfortunately that may mean all 2018 MacBook Pros are affected.
I thought this at first, but there was one person here who didn't plug any peripherals into the machine and alas, the KP.
I just hope I don't get a dud machine this week.