Absolutely!
If someone "cuts right in front of you", or "suddenly stops", such that you can't avoid him, you were too close to him carrying that much speed to begin with.
The guy coming down was unable to avoid the downhill (ahead) skier.
Looking further into it, he underestimated his ability to avoid the downhill skier, but why?
It could be, as is often assumed, that he is a relatively new skier and doesn't know how hard it is to stop at speed. It could also be that he has been skiing many years and is used to carving high g-turns on his edges, but has little experience at skidded turns (i.e. he has little experience making the typical turns taught to skiers in ski school); skis do not have ABS.
I remember being absolutely shocked at how little influence I had on my direction when not having my edges locked into their self-created grooves, after skiing mostly arc-2-arc for a few decades. I only discovered this, because I was skiing while feeling poorly, and trying to be safe, and not skiing arc-2-arc.
This, imho, can happen to self-taught skeirs, but is unlikely to happen to racers or folks who take lessons; racers, through having to navigate skis around turns too tight for their skis, and lesson takers through lessons, are very familiar with how skis behave when skiing mostly sideways. Self-taught experienced speed-addicted skiers usually reserve sideways skiing for stopping, not turning (don't ask me how I know).