I know why it’s like this but it is a little surprising to me when I enter a modern chatroom and I…

I know why it's like this but it is a little surprising to me when I enter a modern chatroom and I can't immediately PM random people just because I know their username. In IRC you can turn off some kinds of PMs based on chanserv/nickserv rules but it's really a protocol out of a different era's understanding of online harassment.