Yes but as Surtur says, they do that every year.
It's the Saudi authorities at fault here. Look at their commentary on what happened:
"The Saudi health minister, Khaled al-Falih, said the crush occurred because many pilgrims moved "without respecting the timetables" established by authorities."
and
"Saudi-owned al-Arabiya TV reported that the head of the central Hajj committee, Prince Khaled al-Faisal, blamed the stampede on "some pilgrims with African nationalities"."
Great, blame it on the foreigners. But the first quote is actually the more troubling one, because it's ascribing a major crowd control disaster to some sort of failure to follow timetable instructions.
Crowds are DIFFICULT, anywhere in the world. Crowd management is a difficult skill and needs a lot of effort by authorities. You don't vaguely hope people follow timetables- you MAKE SURE nothing like this can happen. Health & Safety rules with crowds seem tedious and jobsworthy but they are there precisely to stop this sort of thing.
Clearly the Saudis are not currently up to the job of organising it all and so this was bound to happen sometime. They had damn well better improve things.