There seem to be two very polarised approaches to issues like this. There are those who don't like the idea of something, but are willing to recognise that it is something for every family to decide for themselves as they are the only ones in full possession of all the facts and emotions and knowledge of their own family and circumstances and, most importantly, their own child. These people are able to say 'not for me, don't like the idea because I think x, y and z".
Then there are people who are entirely unable to accept that their own personal circumstances and choices might not be right for others, that what would be detrimental to their own child and their own family, might be just perfect for another child and their family, and that what makes their family work well might be entirely unsuited to others. These are the people who tend to make sweeping generalisations, and who are happy to tell others that decisions they have made are harmful to their children, even when they have, by their own admission, no experience whatsoever of a particular situation.
I think some people are willing to concede that their parenting choices are subjective - perfect for them, or the best possible for them. Others, i think, feel that in order for them to be confident that their choices are perfect per se, they have to have other worse parenting decisions to compare themselves to.
This thread is a classic example. Not every child who goes to boarding school is neglected. Not every child who goes to boarding school has a poor bond with their family. Not every child who goes to boarding school regrets it. You don't have to agree with it. You don't have to encourage it. But I find it strange that some posters are unwilling to make the slightest acknowledgement of the fact that people have reported positive experiences.
Do what is best for your family. Try to get it as close to right as you can. And let others do the same.