Its a 'bit' agenda-ridden, but there is some truth in it. If you study Polish internal and external politics between the two World Wars, it was asking for trouble. Just as WW1 ended, Poland was trying to snap territories from both the newly formed USSR, and the new Weimar Germany.
Interwar relations were far from happy, as the Poles, now governed by an ultra-right wing military dictator, saw themselves as some sort of new great power in the region (with the bigger dogs, ie. the Habsburg Empire, Prussia/Germany and Russia/USSR out of the picture) and acted as such. Territorial disputes continued over Silesia, and some Czech territories. Ethnic minorities now living in Poland, esp. Germans and Ukrainians, were treated bad, and sometimes, even brutally (there were a couple of concentration camps for them, as well as communist). Poland was always in the vanguard of any anti-Soviet or anti-German alliance, including a Polish suggestion for a 'pre-emptive' against Germany in mid-1930s, but when this was not supported by France et others, it didn't really stop Poland from slicing off some territories from Czechoslovakia when Hitler crushed the Czechoslovakian state (which in itself was BTW not very different from Poland in its internal politics and ultra-nationalistic attitude for minorities, only even more complicated with the Czech hegemony, and the Slovaks sidelined) in 1938/39.
So, I have some serious reservations about the Poland being a victim part, and in this regard, I agree with the post-Soviet stuff, even if its blatantly just about whitewashing Soviet-Russian acts; OTOH, if you have hostile relations towards ALL your neighbours, and conveniently ignore that two of them are just bigger dogs (see self-dillusional expectations in Poland about marching in Berlin in 1939..), then I say there is justice in saying that in the end, you brought it on yourself. After all, actively making both Russia and Germany your enemies, and giving them a lot of really good excuses to step up against the common enemy was just plainly stupid way to conduct foreign politics.