Its well noted that in either case, Baltics are not defensible if Russia gets serious and NATO doesn't have time for lots of pre-positioning. They are a glorified tripwire in normal conditions.
Yep, which is why NATO would then have to liberate the Baltics from the Russians, and this might involve either a NATO assault on Kaliningrad or, perhaps more likely, a NATO assault on western Belarus. I just fear that the Suwalki Gap in itself will simply be too narrow and too vulnerable to provide a corridor for NATO sending its own troops and supplies to liberate the Baltic countries in the event of an all-out NATO-Russia war.