It means that each actor can only expose themselves to a subset (more peers less people) of the total network. As opposed to the current situation where u can collect information on more people as a singular actor. But yes you do expose yourself to the peers you connect to.
Heh, P2P absolutely does not minimize security concerns, especially of your IP being revealed.
Remember how people got DDoSed all the time because of Skype?
It means that each actor can only expose themselves to a subset (more peers less people) of the total network. As opposed to the current situation where u can collect information on more people as a singular actor. But yes you do expose yourself to the peers you connect to.