It’s a bit misleading to compare total numbers instead of percentages. The most people to ever summit Everest in one year was 800 in 2018, and an average of 4.4 deaths occur per year to do it.
That’s 0.55% mortality for this one mountain.
If you apply the same odds to any other sport they would probably be banned. Could you imagine if 9 NFL players died every year? It’s roughly less than 1 per year at the moment I believe and that’s still pretty bad.