Polish and (unfortunately for me) Silesian and German sources about Silesian language is very biased and very incompetent. Poles, Silesians and Germans are a party in a case. Only count source neutral (American, English, Spanish or other).
"Silesian-Polish war? Huh?" - can see that you're a new user, there was a war from 2007.
"Silesian are Poles" - can see that you're a dunce, only part Silesians considered to be Poles, rest is Silesian (separate nation), Germans and Czech. PS. Now, mostly Silesians live in Germany (3-5 million, however in Poland - only 0.8 to 2 million).
"SILESIA IS IN POLAND! You will not change it." - can see that you're from cave or moon, Silesia lies in Poland, Germany and Czech Republic. Not only Poland but you as poles try to use propaganda and lies.