what am I doing at 400 ft 6 miles out
Not quite that low, Bubba. They were 600 feet at 3.8 miles.
Is it really safer? 1900' at the bridge puts you above the PAPI. 1800' is closer to being on the PAPI.
The bridge is about 5.2nm from the threshold. Given the PAPI on 28L is 2.85°, on-slope would be about 1540ft. So we are now at 1900ft (350ft-odd high) with the PAPI showing 4 whites, with less than 2 minutes to get down to be stable by 1000ft AGL (assuming). What's going to happen? They are going to stuff the nose down. I suspect that in all the hullaballoo, they forgot to pull back when they got on-PAPI.
They should have coped but it appears the system set them up.