I agree with that.

I want to know why you would "warn" a therapist about anything? Presumably you want to enter into a professional therapeutic relationship with someone and you are hoping you will exit the relationship without the difficulties you currently experience.

You going to warn parents that children, age two or so throw temper tantrums so they can maybe decide they don't want to be parents? Or are you planning to work hard to continue to engage in borderline actions so they should know you aren't serious about therapy so maybe not want to start with you?