Why not just go to sources that don't have a real leaning? OK, they are hard to find, but they still do exist. Try the BBC for an English-speaking source, or ARD and ZDF in German.
According to the data sheet, it has 17400RPM, which is 290RPS, times 11 fan blades (if I counted correctly), so it would probably run with a 3190Hz sound. The noise is actually not that loud, given as 25dB(A) at 30cm.
While it is not overly loud, a proper case design that alleviates the annoying frequency by filtering it would be a good idea.
Look at the charter. This group is not for asking real questions, as in "Does anyone know..." or "How do I...", but for "though provoking" discussion starters. A bit like r/showerthoughts on reddit was. For that, a name like "asklemmy" is wasted.
Well, it more depends on the overall spectrum - and a good sound designer. I've seen miracles done with air vents filtering out frequency ranges, but that's some voodoo level stuff in my eyes.
Wouldn't the charter not be more appropriate for a "DiscussOnLemmy" group? And leave "AskLemmy" for proper, answerable questions? That mistake was made on reddit before.