And it's not a cultural issue that's particular to the US. It appears that the author of the Hiawatha web server is not from the US either (Wikipedia suggests he is Dutch), so you might ask what link he has to Hiawatha and what justification he has for using the name and laying claim, in whatever small way, to a piece of the original Hiawatha's prestige.
The term to research is cultural appropriation.
(Clearly all these web servers are following Apache's lead in their naming. ISTR a story in the past that ASF had (retroactively) sought and/or received the blessing of the Apache Nation leadership for their use of the name; there's some related information at <https://www.apache.org/apache-name/> though nothing as clear-cut as the story I'm vaguely remembering.)