The fan noise on the pa70g is a non-issue for most of us. You have to also think in terms of comparisions with other PJ's of same lumens in the noise level.
It is an individual matter, so I don't think anyone would say that if the noise bothers them, they are "wrong", just they might be more sensitive to it than the average person.
Any room I'm in, usually isn't whisper quiet, and if it is , I usually use a sound conditioner in it because, a too quiet room can make any sound LOUD that is distracting.
I can only hear the fan noise if the PJ is on brightess mode, I can't hear it on the other modes. So, maybe make screen size for medium brightness mode, or make the room darker. If you have to use brightess mode, move further away from pj, if I am 4 or 5 feet away from PJ, I can't hear it on higher mode.
If I turn on a sound conditioner , I can't hear it no matter where it is, in any mode. Also, I can't hear barking dogs or screaming children, or car sounds outside the house.
It's all relative, and most pj's have about same sound levels, because most have fans in them (generally 25-33 range).