I and all the clinicians I work with program hearing aids to independent targets 99% of the time. With the exception of Oticon vac+, proprietary targets generally just provide less audibility (more comfort).
So here’s a question for users: hearing aids involve a certain amount of rehab to optimize hearing. Imagine you’re seeing a physiotherapist to strengthen your legs after an accident. Would you prefer your physio push you a bit beyond your comfort so that you end up with stronger legs, or would you prefer they be more gentle even though you may wind up with less mobility in the long run?