What exactly is dangerous about this climb? What kills people specifically?

I hear people talk about the weather, visibility, injuries, etc etc. But all of those, if you stay put they're not problems, right? The only real problem I can think of is temperatures so low that your equipment can't contain heat loss for long enough and your body will shut down.

Ok temperature. So if this is the only danger (that can't be addressed by staying put) then could it be addressed by thicker clothes and/or electrically heated clothes?

Not trolling, real question.