As zackdog and I pointed out several times in the other thread, most people DO have a complete record of signal strength. It's in their WeatherLink archives. They can graph temperature and signal strength and see when those two lines correspond.
The question then becomes how many people live in an area that gets cold enough often enough to notice the problem and/or how many will check WeatherLink in the fashion described above? zackdog issued the challenge to everyone to check their records. How many people responded even if just to prove him wrong? My count is 0.
I'd bet the majority of Davis' customers have never even heard of WxForum. How many farmers have you seen on this forum?
As for those that do come here perhaps they don't want to be told it's only them, or it's only been happening recently, or they set their ISS up wrong, or they can't expect batteries to operate at 10F or that Davis would have fixed it by now or any of the myriad excuses those of us who have reported this issue have been given.
Yes, it's more likely those affected contacted Davis rather than publicly make their case, especially if they were uncertain what was going on.
This forum has been a very active forum for many years, and I would think most people live where the temp at least periodically gets down to 10 degrees.
If people aren't reporting the problem, its probably because they're not experiencing the problem. The lack of response to Zackdog's challenge helps back that up. People, especially the less interested and involved, are less likely to follow and respond to a thread about a problem they aren't having. I recall at least one person saying they don't have the problem.
People don't necessarily even have to have WeatherLink. Most people do seem to connect to their computers and/or the internet, and do diligently check their data for any anomalies. Nightly winter lows are especially things people look for and would notice. Even if other software shows flatlines rather than blanks, they're still going check that out, especially as it would be happening to all weather variables and presumably would stick out.
People do try to help each other out here, and that often involves speculation, ideas like lithium batteries can't be expected to operate below 20 are considered and discounted. What you are calling "excuses" are people trying to make sure common errors aren't being committed. That is a reasonable, and even necessary, aspect of troubleshooting. When people suggest someone looking for help check certain things, I don't see it as being accusatory, or as definitively stating that that's what the problem is.
People are looking for evidence and correlation to try to figure things out. If I speculate that the problem seems to have become more apparent recent years, and no one presents any compelling evidence to the contrary, I don't see why that should offend anyone. Others have stated that they don't experience the problem, so however widespread it may be, it doesn't appear to be universal, despite however it may look to you. Of the links you gave earlier, I saw one case were there appeared to be direct evidence that there was a link to dropouts and the cold. Even then you need to consider whatever incidental factors there may be; such as cold happening to coincide with the longest nights, or such. Despite all that, I'm not trying to minimize or deny the problem to those who do experience it.
You came here looking for answers, yet don't seem to appreciate ideas and speculation of what the problem may be. You seem to believe that Davis knows about the problem, with no evidence, and even if they don't, they're still guilty, and that they're the only ones who can solve the problem. Well, you're most likely correct about the last point at least. But as someone else has said, you're unhappy with Davis, but won't tell them. So you've presented your evidence, and I think it is pretty conclusive and valuable. Unfortunately, at least so far, it doesn't tell exactly what is causing the problem, or how widespread it is.