I can only speak from the experiences of my own chis, and all are different. That said, I have had neutered males with smaller chis and the males have never hurt the females even in play mode. If fact, I have found the females to be dominant over males in our home.
"There’s no changing people, and we can’t even help people with whom we’re emotionally involved. Let them be, stop expecting things from people who cannot provide those things, and recognize that we can live happy, productive lives regardless of what others, even close relatives, are doing or saying."