Most of my shots are taken at less than 60 yards or so, many much closer, as I primarily hunt the thick stuff too. Never worried too much about safety noise, cause when it comes off it's all but over for the deer anyway.
Can't say I start messing with the trigger or safety out of excitement either, if I did I'd keep a cold chamber until i was ready to shoot. On a side note, the safety on my Xbow is about as loud as a .22 LR. Never lost a shot opportunity because of it.
The point is you can't just flip it off. People have different tricks to do it quietly.
Never have got so excited I have just flipped it off. But I take deer hunting serious. I am the kind of guy who likes back up, for his back up.
I have never shot at an animal over 40 or 45 yards. Usually less. Will a deer hear it at 25 ? Dunno. I am careful about it. Lots of people claim it will though, from anecdotal stories.
I think it is BS on a rifle in that price range that safety is not smooth and quiet.
