What an insult to someone who has taken on the responsibility of raising a child. Of course they should be called parents. A man doesn’t adopt a son only to be called his “child raiser”. Stop this foolish line of thought.
You're the only one in this thread not attaching the same connotations of "child raiser" to "parent" and considering one lesser than the other. I don't know what's more insulting, being called a child raiser, or considering child raiser to be off-brand parent rather than a generalization of the term.
"No man goes into education to be called 'instructor', they're 'teachers'."
"No woman goes into CS to be called 'coder', they're 'developers'."