BJJ Mental Models Ep. 181: BJJ for Old F***s, feat. Rob Biernacki & Stephan Kesting explains concepts and tactics for safe and effective Jiu-Jitsu as you age.
BJJ Goons 154: Can BJJ Be A Spectator Sport? Nico Ball and Tim Spriggs discuss what jiujitsu can and must do to become a viable commodity in the sport/entertainment industry.
Just a list of BJJ podcasts
I have subscribed to some of them.