Taxi – sorry, should have said, also depends how you ride. (oh, and how much exposed seatpost you need too)
As said plenty strong enough for me especially on my full suss xc bike. If your on a h/t and have a habit of sitting down over bumbs and not pedaling it might not be. Everyones got to find what kit works best for them. But not all light stuff is fragile there’s some good light stuff out there.