And yet again we get this myth that playing anything but ALL is going to be safer! FD had said it again and again, that it won't be! They've already said that they can make an NPC pretty much unbeatable....
Of course they can, but they won't, because that would be bad AI design. The goal of good AI design is making it simulate interesting human behavior.
I watched a video today of a player vs AI at the federal distress beacon and was surprised by the actions of a federal AI fighter that actively used the wrecked battle cruiser for cover, even flew into the gap in the hull, coming out shooting again at the other side. If this is indicative of what FD is capable of then single player will surely be very interesting.
So I agree that indeed in that respect single player will not be much safer than multi player. But I also do not expect FD to fill the universe with sociopathic AI. I believe neither do you

.
But when the universe opens up I believe the chances of meeting sociopathic players will not be that big either.
The difference will be that I think the AI will not be programmed to grief.

I do not believe we will ever see an AI anaconda waiting near Aulin station to shoot down defenseless Haulers for example. Neither will we see AI on your team purposely opening fire on you to destroy you. Also the AI will not disconnect cowardly when it is losing a battle. I know the latter will be addressed, but I use it as an example of typical human behavior that I feel is immersion breaking and thus impacts my game negatively.
I would not avoid multi player because I think it is more dangerous (not for me anyway as I am confident of my skill), but because I think human players tend to behave more immersion breaking and dishonorable. It is that what I hate most.
And as I already mentioned I also feel very uncomfortable about humans influencing my Elite universe, exploring and discovering what I want to explore and discover.