That is a 'clue' to what, exactly? That there is no performance changes in audio equipment as it ages? Or just that the manufacturer is smart enough not to enter an arena of audiophiles with too much time on their hands and nothing better to do than discuss what to me is obvious. Or did you mean to suggest that most all audio equipment had some break-in issues, even if for only a couple of hours, so manufacturers comments were not really necessary. I assume the former, that makes sense to me anyway.
Rok2id, consider that because you may have never experienced the break in of new, out of the box, audio equipment may mean nothing at all unless you can validate in some way, by establishing what ancillary equipment is used, your hearing accuity, your listening skills, and your experience, that such doesn't exist for others, apart from yourself of course.