My partial hearing loss is such that I can understand conversations in an otherwise quiet room, but if someone turns on a fan, or
intentionally plays white noise through overhead speakers, the conversation needs to be about twice as loud in order for me to understand it. Normal speaking volume isn't quite enough any more. That tiny bit of white noise overwhelms those frequencies that I can still hear to differentiate between similar speech sounds.
For me, blowing fans are unpleasant. Piped in white noise would be torture. Like gratuitously flashing strobe lights into the eyes of someone with night-blindness.
Maybe this could be used as the basis for ADA complaints against open offices? I can't understand why anyone would think that's a good idea, but then again, I don't understand open offices either.
(I also prefer 2-day email chains to face-to-face conversations, because I can both understand what I read much faster than I can understand listening to speech, and refer back to it later.)