I agree there can be differences in mangement. By 'they' of course you mean me and I would take issue with you in that I am willing to listen and to take on board other peoples point of view.
What I am not prepared to do is to sit and say nothing when I think that wrong information is being given to new keepers and this is one of those cases.
There are tried and tested methods of rearing chicks which can be adjusted but there are also things that are or border on experimental and in theses cases it is not a good thing to pass these on to new keepers. A very good example was messa asking for advice, picking up on a contoversial information perhaps because it was the first thing on offer and running with it. This happens time and again. It would see it as less of a problem if owners who gave this controversial advice had healthy, productive hens that had no vices but they appear sometimes to have the most unhealthy birds.
Keeping poultry over a long period, as with life in general, obviously gives you experience and I don't think there's much I haven't encountered. What I bring to the forum is that experience and a from a different perspective than those who have only been keeping them for a short time, many times being able to advise, hold on, this may pass, chicken have off days too.
What have i learned from this question ? Be ready to remind keepers that compound feed has a very limited shelf life and while in this instance, no harm was done at other times it could have a bad effect.
As for new knowledge and research, I'm quite prepared to take it on board as long as I know that it has been researched and not something someone has made up, or someon's theory. I remember that it was not long ago that you were bemoaning the fact that you were getting conflicting advice, for vets as well. I can assure you that there are many, many productive flocks of chickens kept in a straightforward way, who don't seem to encounter nearly as many problems as occur with some people on this forum. In my opinion, there are some very bad practices which need to be challenged so at least keepers will know that there is an alternative way.