Hi guys!
I am an electronics engineer, doing electronic and software design. I have been running an industrial and building automation company for more than 26 years now and read the statement carefully twice.
From my point of view the whole statement sounds reasonable. This includes the problems they experienced while implementing security features, like drained heat by metal tools due to user interaction / opening the door, top lid, fan influence and even possible user modifications.
Thus, I consider this device as save as it can be. I would just reduce the delay for the software protection to kick in while the head is moving / the print is not paused (no user action considered).
Kind regards from Vienna
Christian