Nobody uses them in hifi. There are good reasons for that.
I know nobody uses them in hifi. That's the problem! And I've never heard a good reason why they aren't used either. The only reasons are tradition and install base.
When was the last time you were injured or placed in harm's way by banana plugs?
Never, because like I said, I'm mostly a headphone guy. I can't even remember the last time I hooked up a passive speaker. I still understand basic electronics though.
Personally, I'd be more concerned about damage to the amplifier from an accidental short, but it's still not particularly safe for the operator either. At least not compared to other electric safety standards. If an amp was classified as a power supply, which it really is, safety regulations would never allow for connecting bare terminals with unshielded connectors for home use.
WTF would someone say if a charger for a new gadget ended in banana plugs? Sure the manufacturer would tell you to be careful and plug both the bananas into you gadget before turning the charger on or plugging it in, and not to worry because it has reverse polarity protection. They'd say even if you did short it that fuses and current limiting would probably protect the charger, possibly let the magic smoke out, and have a less than 1% chance of starting a fire. All of that's true. If you're careful and know what you're doing it would be perfectly safe. Even if you zone out and accidentally short them you'll probably just get a a small spark and a little scare.
Everyone in their right mind would still tell them to f*** off and use a USB or barrel connector.
The only reason this gets a pass is with speakers is tradition.
It's not the safety scandal of the century or anything and they're only unsafe in comparison to newer and stricter standards but Speakons are just plain better because they leave less room for accidents.