Most people don't give a flying hoot whether their ancestors were Polish, Irish, German or Marsian. If you were born in the US, you are American. End of.
You are absolutely wrong about that.
And your obtuse comment should be taken in the context where only last January you went off on a pedantic rant denying Mt. Kosciusko is Australia's tallest mountain
while insisting (incorrectly) over and over again that another peak way offshore by Antarctica and named after some unimportant Scotsman is. Since you were wrong from the outset your tirade back then had nothing to do with a difference of meters but every about you needing to rally to defend the name of some unknown dead Brit who helped colonize Australia to the detriment of the Aboriginals.
But if you really believe most people don't give a flying hoot about things like ancestry then you shouldn't be displaying anything even remotely regarded as nationalistic yourself.
The fact is many, many people all around the world care a lot about who they are and where they came from. It is important in many families to pass knowledge and traditions of their past from generation to generation. Others, for whatever reason like family or social upheavals, have to research and rediscover their past later on in life.
Any diaspora (who also often make up minority groups in other countries) have rights to preserve their identities both under UN conventions and in protections offered in national laws of many host countries. Furthermore any violations against them are often highlighted by human rights groups.
The Polish Embassy and consulates in America (and many other countries around the world) often attend and host events for local Polish communities. And look at President Komorowski expressing concern about Polish minorities rights in neighboring Lithuania.
The article in the link even states:
"In Komorowski's words, the Polish state is paying ever more attention to its national minorities living abroad."
This is official Polish government policy and I have no doubt that you are sitting there at your computer scowling in frustration since Poland flat out doesn't share your boorish view that if you weren't born in Poland then you aren't Polish.
And for you to say being born in the US makes you an American is an extremely simplistic interpretation of reality on your part. Every family's circumstances are different and not every woman who gives birth in America is an American citizen. US laws may grant American citizenship to a child born there (i.e., the "anchor baby") but this is not to say that any such babies will grow up in America or ever chose to exercise any right to citizenship there. There are scores of non-US children born in the US who retain and exercise the citizenship of their non-US biological parents. And you can find plenty of recent articles too about more and more people who actually have US citizenship are migrating each year and taking up citizenship in other countries.
Even then, what is American? It doesn't matter what you
personally think qualifies a person as being American. Technically anyone in North America (Canada, the USA and Mexico) can call themselves an American. Same too for anyone living in a country in Central America and South America. But they don't because they know, unlike you, that they have their own unique national identities and each one is a tapestry of many different cultures from within.
If you went to the USA and asked them what it means to be American you could get over 300,000,000 different opinions on that.