To go back to the original question, I don't think it will be used against us in recruiting since we're hopefully only looking at next season. Should JB be allowed to coach? Sure, it's his and his family's decision to make if they are in fact playing games this season.
I will say my dad's about JB's age and is in pretty good health for his age, similar to JB. If he were in JB's shoes, I think I'd prefer he avoid the travelling and being in arenas that coaching involves and I know my mom would. (at least based on what we know now. That may change when the season gets closer.