I heard my parents get this from their favorite right-wing talk show host. Apparently, not just any form of patriotism, but US patriotism in particular is "apolitical", and thus there is no issue with supporting it.

Note that these are the same people who will insist that the media is getting taken over by malicious people promoting a "woke" agenda but praise commercials which glorify the United States and its supposed values.

It goes without saying that being a patriot for the United States out of all other countries is political, especially given the current regime. Being a "patriot" who supports the establishment in the US is no different from being the same in Nazi Germany.