Its an end of an era.  Its like asking why there are so few people on BBS or IRC these days. Tech changes and people just head to the next thing because they are ADD and that's where the majority of people are. Young people dont even understand what opsec is or why its important.  They will gladly give their info to any 3 letter agency that asks for it.  The Internet is increasingly centralized and almost entirely under surveillance.  Shit sucks.