That's a pretty weak strawman.
As a non-US citizen who never set foot near the US, I found the MAGA story to be a pretty blatant example of fake news that was clearly pushed in spite of any fact check or impartiality.
When I first saw the video pushed by US's media corporations my first reaction was to have a very negative opinion about the kid in particular and the whole political movement in general.
But afterwards I had the opportunity to see the whole video, without being subjected to the blatant manipulation, and the real story is radically different than the narrative that was pushed by the media.
Any journalist and specially editors who had access to the video clearly knew they were blatantly lying to the public and were intentionally misrepresenting the events, but they did so to push their agenda. This has nothing to do with confirmation bias.