I have to make an effort outside the game if I don't want to rely on sheer luck and probabilities that are probably set against me.
I've never felt like I was required to do this. There are certainly less people around than there were in years past, but there are still enough that I can find people entirely in game for most activities I'd be inclined to do. There are at least a handful of people on my friends list (the overwhelming majority of whom I have never had any contact with outside of the game itself) who are online at any given time. Failing that, I can still go to population centers in Open and usually get a response from strangers in relatively short order.