Whatever happened to engineering ethics? Here's a good example. Lots of stuff about not endangering life or property. Nothing about "when you can blame someone else for endangerment of life or property, have at it". Nothing about "don't worry about endangering life or property until you've actually seen it happen once, hypothetical hazards aren't real". I seriously hope I never end up owning a device made by some of the people here.
"Endangering life or property"...here we go again.
Let's think about this for a second. We're talking about a device, which is INTENDED to be plugged into a Windows machine during operation. Your entire argument is that there is a product out there (not just one, but apparently enough for this to be a serious ethical violation), which if, during it's NORMAL AND INTENDED operation, a user were to open up HyperTerminal and type the wrong character, the device would be permanently destroyed, and/or would injure or kill somebody.
That is an extraordinary claim, and just like with that nutter in the free energy thread, I'd like to see some proof that such a device actually exists. Until you can provide such proof, these are just baseless suspicious that merit no further discussion.
In the absence of such a ridiculously, criminally buggy piece of hardware, the result is no different than simply refusing to communicate. The device doesn't work, it provides a message that says why, and the user should take it up with the manufacturer.