People are jumping to "false flag" stories because the story as presented is simply unbelievable (the third highest ranking official in the country has zero security?), and the media is being evasive (Politico reporting a third man opened the door, then reported that it was a baseless claim!), and the media is also aggressively eager to portray a nudist hemp jewelry maker illegal alien as a MAGA loyalist.
If the story were straight, and reported honestly, some very few would remain suspicious.