I have just sent a message to the manufacturer, and will let you know if I get a useful response.The questions you have asked including why you don't understand. ... I can't be bothered with this nonsense, if you won't ask the manufacturers, who fully understand the issue, then I don't have the time and energy to continue this.
As for whether the manufacturers actually do "understand the issue", you will realise that I have my doubts. about that - and no-one (not even you) have yet indicated anything that is incorrect about my reasoning).
... which I find pretty strange. If my belief about what seems to be a pretty basic electric principle is incorrect, then I would hope that some of these 'everybody but me' people would say so, and explain why I'm incorrect. However, if my understanding of these 'pretty basic electrical principles is correct', I find it hard to believe that none of the electricians would also have that same understanding - in which case, again, I would hope that at least some of then would say so.It seems to be unqueried by everybody but you.
Some people seem to believe everything they read, without question.