Haha, haven't had a chance to watch it yet, but sounds like I haven't missed much.
My take on the front camera is that they obviously experimented with it and seems they had plans to include it quite late. I base that on the fact that test cars were seen with them and that the initially released artwork had it included.
Clearly at some point they decided it wasn't necessary, pure speculation as to why, could be the new 3d park assist system development was at a stage where they realised they could achieve better than 360 camera view using this system. Could be some sort of fusion issue with the other cameras in FSD, probably less likely as I'm sure they could have overcome that if it was useful. Could also simply be that the observed potential benefits in testing were not enough to warrant the expense - Understand a single camera is not that expensive, but you need to also factor in wiring, maintenance, development based on the fact that you'd have two different systems with different camera setups, etc etc.
All of the above leads me to believe that we won't be seeing front bumper cameras at least on the 3/Y.