Animisha Thank you for writing this! I was thinking to say something similar but you were quicker.
It's also a fact that professional pianists with small hands are much more likely to become injured than others, despite having developed very good technique and maintained good warm-up routines over the years, being aware of the risks. So there is no getting around that hand size also matters and can't be stretched away. If it hurts, stop and heal!
I applaud the initiative to launch products like the Athena so more people can play pain free and with just normal injury risks. Musical instruments are only that: tools to make music. It makes so much more sense to make them fit the player than the other way around. Especially for their personal instrument where people spend the bulk of their practice time.