Not correct: The Nikon F3 keeps the TTL metering AND AE with Any and all finders since the meter is in the body just like the New F1. The New F1 would have been a competitive pro camera if Nikon had released the F3 later and the F2 was the New F1 only competitor.
The hybrid shutter in theory was an excellent idea, especially for the pro's that it was targeted to, who had a distinct distrust of battery dependent cameras (and who could blame them in that era of power hungry circuits), and this was Canon's (as well as Pentax pro body the LX and my previously mentioned Minolta X-1) solution to assuring working pro's that they'd always have a functioning camera to finish the assignment. HOWEVER, once again the arrival of the Nikon F3 while the New F-1 was in development changed the game under Canon's feet: The LCD meter display and extremely low power consumption of the F3 (also helped by powering the body from the motor drive battery ) meant that those power concerned pro's learned very quickly that battery concerns with the F3 were simply not an issue. Especially when used with the excellent motor MD-4 which most of the working pro's adapted to using very quickly, (as opposed to the F2 and its line of heavy fussy motors, where many pros would have only one dedicated motored body and 2-3 other non-motor bodies. Most pro's started carrying 2-3 fully motored F-3's).
I agree the T90 shutter was not durable enough; every one of the pro's I knew that shot them professionally lamented that they wished the shutter of the T90 was in the stronger heavy duty body of the New F-1, shutter/body failures were common in the T90 era. As well the in water surf photographers I knew during a period of time preferred to use the T90 with the flash sync of 1/250 and then they'd use 1/350 as the sync speed, the underexposure of the lower part of the frame aided the in-tube photos with a wide-angle lens, effectively creating a vignette of sorts. When the camera worked as well as the water housing didn't leak the set-up made great images.
But; if Canon had thrown some weight behind a faster shutter that was wholly battery powered they could've put it in to the New F-1, remember at this time Nikon had the FM2/FE2/FA shutter with titanium shutter running at 1/250 flash with top speed of 1/4000, and it would only be a few years until Nikon was putting an Aluminum shutter into a consumer camera that ran up to 1/8000 the N8008.
Oh and the reason that camera was the Olympic camera was wholly due to Canon's extensive corporate sponsorship of those particular games. Arguably the most memorable images of those games was made with a Nikon either an F3 or F2 Highspeed with a 300mm f/2.0 and TC-14c (David Burrnett of the fallen runner for example).