You're entitled to your opinion, but the shoulders thing doesn't fly for me.
Exhibit A at 0:58 seconds in
I've mentioned that the transition isn't an issue for a while now. I've done it too without any issues. I tend to cant the rifle a bit though just out of precaution but have never had any issues and the cant was almost nothing. Unfortunately I don't have a video camera. Thanks for posting it.
One thing about the transition. I'm not really a fan. The only time I would use it would be if the only cover was on my weak side and I was having to stay there providing cover for an extended period of time. Otherwise changing over is something I don't like doing. Regardless of having an AR or a bullpup.
Some things I've noticed with threads like this:
A lot of the misconceptions about bullpups are based on old designs such as the AUG. Or those who were practically born with a M16, AR15, type rifle in their hands. Mag changes for example: With the Tavor you can do a tactical reload using your weak hand by thinking pistol grip and trigger on the mag release. You retain the mag. Or you can use the thumb on your strong hand to let the mag drop free for fast reloads. With practice it's right up there with AR mags. Interestingly enough only the newest addition to the AR such as the ambi mag release allows you to do the tactical reload without having to use your strong hand index finger. Not a biggy but still interesting.
The bullpup is the modern infantry rifle. Frankly for a police patrol carbine I'd rather have a bullpup. You can fit a 20" barrel (which the 5.56 round was meant for) in a package the same length as a collapsed 16" AR rifle. Out in the open it gives you the velocity. In close for urban and you still have maneuverability. They've come a long way. We're at the point now where I think they are excellent.
Now don't get me wrong. I am a huge AR fan. But the AR rifle shines in modularity or specific use. Shorty for urban, longer for DM. The accuracy potential of the AR allows it to be extremely accurate. The short barreled ones are very handy with very fast mag changes. But for an all around battle rifle, I like the Tavor better. For military though it would make sense to keep it all based on one platform.
With some of the new AR designs coming out I see the AR continuing for a long time. But.. I can also see why countries that aren't already tied into the AR or wanting their own industry (Israel) would go the bullpup route.