My personal opinion is you can't have too many bonding paths.
John is right, these "stray voltage" problems in pools and spas started when we got away from conductive pool shells, plumbing and decking materials.
For that matter the loss of a totally metallic water utility system took away the city wide equipotential grid that existed when the original electrical systems were designed.
I know in my own little world, I don't pour any concrete that is not bonded. My whole house, driveway, pool and spa is one big Ufer and everything is bonded to everything.
