If NATO as a whole responds, yes it's in Ukraine's interest. If the NATO response is weak and non-cohesive, it is a victory for Russia, demonstrating article 5 isn't worth the paper it's written on. Let's see how things play out. So far we're in "small, plausibly deniable provocation" territory, but if this follows the "salami slice" M.O. we would expect Russia to keep slicing if they feel there's not enough push-back