0.2% of people are born deaf, whilst 15% of people over 18 have hearing loss. The percentage of people with hearing issues who can compensate it pretty low.
There is a big difference between deaf and hearing loss
(I am on day two of my single-side NHS hearing aid. LHS is age normal profile for 65. RHS is typical profile of 95-year-old)
The discussion was about deaf people compensating. The science shows that born deaf and those who become deaf both develop sensory compensation, though undoubtedly to different degrees. In the same way that the brains of Cab drivers doing the Knowledge change.
https://www.scientificamerican.com/article/london-taxi-memory/