It didn't take DMCA's to cause people to leave here.
All it took was an insanely unnecessary site re-design that was by all objective standards a downgrade into a convoluted mess.
Even re-visiting now it's a completely cluttered disaster; like someone with too much time on their hands "fixing" things that aren't broken and making it so cluttered and trashy looking that most people simply nope the hell out.
The early versions of this website were one of the best reading sites I've ever seen. That's what also led to it exploding in popularity, despite many other options at the time. But some people don't know how to simply leave crap alone and have a toddler mentality of "newer is better!"
DMCA's had very little to do with anything. It was mostly self-inflicted stupidity.