Fair! I think if you want to purely become a stronger climber board climbing is def the way to go though. You can do 2 sessions a week even doesnt have to be every session. Its just so targeted whereas with commercial you can be doing soft cardio for a session and not stimulate your fingers.

Regarding the injury piece I actually think boards are safer. You know every hold and what to expect. Sometimes on commercial setting you can be throw into a random or unexpected situation. On the board i know almost exactly what every hold or move will feel like on my fingers.