My hazardous guess is that it's because the fins alone wouldn't be strong enough to slow the train down should something fail at the switch. Yes LSMs provide braking 'for free', but they might not provide enough braking force for the emergency situation.
I noticed Turbo Track at FW has a similar setup, even though that is a different type of ride. It's almost two seperate launch sections separated by some brake fins:-
Exactly right. Even Electric Vehicles, which conduct a vast majority of their braking via the electric motor (which too is an LSM), still require an old fashioned-friction braking pad to stop for the very final slowing of the vehicle or in an emergency when more braking force is needed. In the interest of safety, Intamin wants to use all braking force possible to bring the train to a stand still. (This notion also carries over to final brake runs that use a combination of magnetic and friction braking - magnetic braking is efficient, but friction braking via brake and tire is most failsafe way of holding a train in place when needed)
Surely there must be something, legally, that states you can't use straight-up lies when advertising a product?
I'm surprised that nobody found it before, given that this was uploaded 3 months ago (according to Vimeo, at least).
I would suggest this won't (can't?) be the only way in and out of the Pantheon area. You'd struggle to get one route of egress from a large occupied area like this through UK regulations, and from my fleeting experience the same sort of rules apply in the USA too.
