3 man dive team has been in place for at least 3 decades. We're not going to change the industry because someone couldn't live in 30' of water. Doubtful if a diver had a light, maybe. We're used to 0 vis.
In 0 vis, it's unlikely the victim could have found the 4" rigid corrugated hose in the tank or the 2" or 3" water inlet pipe in the tank that went from floor to ceiling, to pull himself to the surface.