Are you confused about something we said or confused because there are different answers? There are different answers because poultry keeping is not an exact science. Most people without BYC have to learn by trial and error and end up losing birds and giving up. We have the privilege of learning from many experienced poultry keepers, whose advice and opinions vary. My uncle (not on BYC) got an electric fence for his birds because he heard I had one. The birds got shocked and stopped laying so he got rid of them thinking they would never lay again. I can't tell you how many silly mistakes I've made over the years (and would much rather tell you my uncle's than my own) that were many times correctible and other times not.
On BYC when you find someone whose poultry keeping you respect, then you really believe in their methods. In my case, I've known Danz and Trish and respect their methods and listen to them. Although I have a bunch of Valbazen I've been using up, I would very much like something less expensive. I used to have more birds than I do now. In Danz's case, who literally has had 100's of birds for years, when she finds something that is as inexpensive as possible and as effective as possible, she really believes in it and she has so much experience, I believe in her. It really is okay for people to have different opinions.
It seems like you are sort of like my husband who gets stressed out trying to find the ultimate best answer and want a consensus on what that best answer is. There are many degrees of right answers and if you decide you trust your friend's advice, what can it hurt to try it? You have the pour-on. Try it and if it doesn't work, try something else in a week. If you don't have that many birds it can't be that expensive to switch gears, should you be unhappy with the result. If it works, then you've learned something very valuable. If it doesn't work, then you've learned something very valuable. It's okay to do something we haven't recommended. We're not like the chicken police who are going to come arrest you.
We will be interested in your results and supportive, always.
It's okay, hang in there!