I agree. You don't have to do biophysics to be a biophysicist. Biophysics is a subdiscipline of Applied Physics which is a subdiscipline or Physical Sciences that is to include Pure and Applied Physics. Harvard has many good professor doing research in biological physics as well. Indeed, Steven Block's advisor Howard Berg is at Harvard, and many other distinguished professors. You can apply to Harvard Physics, Harvard Applied Physics, and Harvard Biophysics programs. Biological Physics research is offered in all three departments. If your background is Applied Math, Math, or Pure Physics, then apply to Harvard Physics. If your background is Applied Physics, Physics, or any hardcore technology or applied science discipline and have done research in an applied scientific area, then apply to Applied Physics. If are from a biology, chemistry, or computer science background, apply to Biophysics program.