When you add this to their -700 ft/min glide-path, this should explain why they had an increased rate of descent prior to them taking their avoiding action.
Disagree. Nothing to do with a CB and in any case the
Investigation report stated the PF disconnected the autopilot and reduced the pitch from 0.5° nose up to 1.2° nose down. Incredible error and a potentially fatal action at that low altitude. Generally the result of slow scan rate while manually flying and thus poor instrument flying ability. A common trait with automation dependency.