I can't quite follow your complaint. But, in summary, ALL posts must follow TOS, regardless of sentiment or if they start a discussion or reply to a discussion.
If a reply violates TOS it may be deleted. If a post is a reply to a subsequently deleted TOS violation, that reply MAY also be deleted if it no longer has context. It also MAY remain if it can "stand on it's own" as a comment.
Use the "Report TOS" button if you feel a post violates TOS.
Use request review if you think your post was wrongfully deleted.
"It is easier to fool someone, than to convince them they have been fooled."
For those that don't get it, it means that people need to be more careful, and do good due diligence...