I'd never noticed a post being deleted because of this reason until recently, but now I think the way this forum is moderated contributes to what a helpful source of information and
online community it is.
At first I'd appreciated this 'expert' post telling us all how wrong we were, as he seemed to have a lot of knowledge on the subject, but then I wondered what the
experience would be like for someone new to this topic - they might assume their off-grid dreams are not possible because this person shut down every idea other than a small list of expensive ones, and others might no longer want to contribute their own ideas because they don't want to bluntly be told that they're wrong.
If this person had communicated in a different way, then it may have
led to a useful discussion. There are many places online to read posts saying "your way is wrong, only my way works", it's nice to have somewhere without this, and I think it makes us feel more
free to express our own opinions and experience, and makes it a more informative and inspiring place to be.