I agree why at IF your student is interested in schools like MIT, then a counselor now could help chart the path.
But please…your kiddo is a ninth grader. Hopefully he will have some say in the colleges to,which he applies…and eventually attends. MIT might be one…and then again…it might not be.
So pick a college counselor who can help with the process…not one who specifically deals with MIT, or the like.
Yes, the counselor should have good knowledge of the admission processes at these elite schools, and what it takes to be considered for admission. @oldfort is correct in that admissions are holistic…and encompass many aspects of a student.