Blink does allow you to escape. But it does not allow you to gain as favor ale positions as Titans Lift, for example, or the hunters air-floating style of triple jumps.
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If time wasn't an issue then I would agree with you. However in this shoot em up style game time is definitely an issue. The fact that blink can instantly get you to a favorable position will gain you precious seconds on your opponent compared to the other slower jumps. In a game where even the worst archetype of guns can kill you in little over a second this is huge.