Although their have of course the right to express such a way to their Ally, there is some contradiction, or they tried to support awkwardly Georgian government. Anybody looking at a map of Baltic Sea would easily understand that Russia does not need and will never need an amphibious force to invade those countries. Secondly do they trust or not the US protection and the NATO. If they do: no need to protest; if they don’t: no need of NATO.
In fact they simply felt like Georgia: at the mercy of the former suzerain, and this fear should be respected, because of the extend by which they suffered during those scores of Soviet domination.
However one should compare only what is to be compared:
-Kaliningrad is internationally recognized as a Russian territory, what the harbour of Sebastopol is not.
-Baltic States have no region, which wants to cut links off. In contrary to Georgia, they did not attack anybody.
-Baltic countries belong to both the NATO and EU. Georgia not.
-Baltic countries are fully democratic states, what Georgia could not fully implement yet.
Therefore, although all of those four States belong to those former small Soviet republics, their respective situations cannot be compared at all.