Seems to have occurred about 25 years ago. I started hearing it in USAW clinics in the 90s. Strength is force production, in this case against the bar. Force causes acceleration. Acceleration produces momentum. Momentum is necessary after the point in the pull where the force stops being applied between the floor and the bar -- its continued upward motion gives the lifter time to get under the bar and rack it after the pull stops. So this individual is saying that either 1.) acceleration is not necessary in a snatch, or 2.) very rarely is an Olympic lifter not already strong enough to accelerate the bar enough to snatch enough weight to win the meet. I suppose this means that the US team has had insufficiently good technique to place above 30th in the Worlds during that time, and that everybody that has beaten us has much better technique, during a period of time in which the main emphasis in the US has been technique.
This is probably a mistake.