There is no such thing as Poland going to war, and there is no such thing as the Baltic countries going to war.
There is only NATO. Besides, Poland isn't flexing its muscles, it's just an annual tradition.
Russia does not want to involve NATO in the conflict because intelligence data and some equipment in Ukrainian hands are enough to inflict losses on Russia. If Russia knew that an attack on Ukraine would cost it so much, it would not have started this war.
Every time someone says that Poland is going to war, they reveal themselves as a disinformer and a person paid by Russia, because this is its narrative. Or maybe he's just an idiot.