BG - oralism is about manually teaching the deaf how to speak and how to "listen". Did you have to be manually taught how to speak after becoming late-deafened?
I grew up oral only and no, it was not very beneficial because even though I can speak freely with the hearing, I still cannot hear them fluently. I was left out of everything from family meals to schools and even if I was the most perfect speaker on this planet, I still struggle with comprehending what hearing people say. Advocates of the oral-only approach don't get this or they just ignore this as irrelevant.