For some more extreme riders, they need bikes that are designed way stronger than any average bike. Imagine jumping a 50 foot ramp on a common bicycle, you’ll straight up break the frame in half.

I had met a retired rider from m.pinkbike.com and had a chance to ride his ~$8000 bicycle, that thing was built like a friggin’ tank with some of the most advanced mechanical features I’ve ever seen, including adjustable hydraulic shocks.

As far as lightweight, that bike was anything but lightweight, it was rather heavy actually, but when frame and fork strength is way more important, that’s just a necessary tradeoff for safety in extreme riding.