Well, sure there are "bad actors". But some of us like to work around that bullshit just for fun, and to share :) And indeed, many of those "bad actors" are actually pretty clueless.
Would you really share if you knew you would get charged as someone who supports human trafficking and faced a decade long prison sentence? Even if you beat the charge, how employable would you be of the first thing people saw when they searched for you is your mugshot as someone arrested for supporting human trafficking?
First, I wouldn't knowingly consult for human traffickers. But I do share online in various forums, some of which are effectively anonymous.
Second, Mirimir is a pseudonym. It's quite well firewalled from my meatspace identity. And it actually plays pretty safe. For anything at all iffy, I use temporary personas, and compartmentalize more thoroughly.
Third, by that standard there'd be no Tor Project, or Freenet Project, and a lot fewer Github sites.