There were a lot of owners (majority?) who didn't know if they had sensor corrosion or not. Did you expect them to periodically send in their cameras for evaluation to see if they did? It wasn't until Leica terminated its guarantee that people decided they'd better send in their cameras so if their camera was affected they would lose out on what Leica had promised them.
PTP,
I know that determining if one has sensor corrosion is not obvious to many. I only suspected corrosion on my MM because of artifacts seen on my larger prints and only on some of them. My 27 inch EIZO did not make these artifacts evident.
I did not know I truely had sensor corrosion until Leica informed me. If I had none I assume that Leica would of simply returned my camera, but that was not the case.
I have a friend who had his MM sensor replaced. He freaked out because he thought he had sensor corrosion again on the replaced sensor. This was after the modded/upgraded/corrected sensor. It ended up being as I suspected. Oil and grease migration from the free rebuild/overhaul that was performed with the sensor replacement. He got a free sensor cleaning by Leica, problem solved.
The sensor corrosion problem is widely known, and I say any owner had to be aware of the possibility. This was not a surprise or any mystery to add drama. The tension, drama, and sense of mystery created being added is being naive and not sending in your camera to be inspected and taking appropriate action.
All this was compounded by procrastination and human nature as well as some bad handling and abrupt notice by Leica.
I for one sent my camera in to find out. You are asking me if it is appropriate for others who could not determine for sure like me to do the same. My friend I mentioned above did twice.
It was posted in a thread I started and mentioned by many, "just send in your camera for evaluation," when people could not determine if they had sensor corrosion for sure.
BTW I did not make a poll, but the responses in the thread I started suggests that in most cases corrosion was found and sensors were replaced. I don't recall many that were simply returned and if there were many more had the sensors replaced.
Again this is about an owner of an expensive camera taking responsibility. If you called like I did, a shipping label would be supplied and the only cost would have been the time without the camera.
Cal