Aviation is still much safer than back in the days where 3 or even 4 crew in the flight deck were standard. At some point the tradeoff between increased safety and increasing costs becomes unreasonable.
Here where precisely? Civil aviation is extremely safe in 2024, and this crash made worldwide news precisely because crashes are now very rare in the developed world.
If you demand 100 per cent safety, you are bound to be disappointed forever. Not even walking is 100 per cent safe.
Airlines decided it would be cheaper to cut that position and here we are.