I used to run a Minecraft server for my nephew, from 2012-2014.
  Nearly killed my laptop. People of all ages would come on, but
  mostly kids from like 9-25. As it became popular (I just called
  it "Ken's Server" - 27,000 unique members in total if I remember
  right), I'd get the occasional threat of attacks. They'd come
  on, threaten to DDoS. They'd claim to be from Anonymous. Used
  just about the same script. "Hi, I'm from Planet Minecraft",
  trying to convince someone to give them control of the server.
  My tactic was to play along for a little bit and then I'd
  predict their next words, which were always the same eventually.
  Invariably, they'd be "from Anonymous". "We are Legion" and all
  the fun Anonymous quotes. Sometimes they'd even try. I'd tell
  them, "I have no firewalls." (true). "DDoS me. I'll wait." And
  they'd run some run-of-the-mill script that they thought was
  exclusively theirs, and fail to knock me offline or cause any
  trouble what-so-ever. If they came back (they usually did), if I
  could get them to settle down a little, I'd convince them to
  stay and eventually I'd make them admin or something. They just
  wanted attention that's all. Of course these were kids.
  Teenagers, college students, probably some young kids my
  nephew's age as well. So, anytime I would see something about
  Anonymous in the news or on youtube, or that funny plastic mask
  somewhere, I'd have to laugh. That's not to say that they
  haven't done some stuff for social justice and all of that. I'm
  sure they have. But I could never take it seriously because of
  the "me-toos" I encountered in my tiny pocket of the internet
  Universe.