You complain about your past and your ex, but what I see is that you are trying to manipulate and control the other people here. You complain if they reply but you do not like what they say, as if you are entitled to tell them how to think, react, speak and behave. If you don't like the way people behave - which is to suit then not you - then don't post. When you post anyway that is what happens. Grown adults read what you say and if they want to they respond and say what suits them.
I've had posts on here where people have reacted in a way that was totally unfair to me, where they got their facts wrong, or tried to criticise etc, some were uneducated and stupid, some had no common sense, some had got all of the facts wrong, some had assumed a lot of stuff to suit them, some were jealous, some don't like being reminded that they should have made more effort with their own life and they were lazy or irresponsible, that is what happens on a forum. It is the risk you take. But they are all strangers. Most I would never ever want to meet in a million years. So who cares? I block them or continue to interact with them. No point having a go at them or telling them off. You are not a teacher talking to kids at school. If someone does not suit you then block them, that is what I do. Because life is too short not to. You made the same mistake in the past. You carried on with a miserable, pointless relationship instead of walking away. If you don't get on with someone walk away or block them. Don't try to tell them how to be. It is not your place to decide that.