'x is illegal' is a cop-out (albeit often unintentional) and I wish people would stop using it. anything can be made illegal, are you just going to roll over if expressing an unpopular idea becomes a crime? Conversely, illegality doesn't deter a lot of people and many are skilled at playing with the envelope of legality, so absent any moderation you'll get lots of technically/arguably legal content that is designed or degrade or disrupt the operation of a target forum.
It's unhealthy to just throw every difficult problem at courts; the legal system is clumsy, unresponsive, and often tends to go to unwanted extremes due to a combination of technical ignorance, social frustration, and useless theatrics.
We're talking about a social media service adhering to one of the most liberal set of speech laws and norms in the world, not the imposition on the population of an unjust law. Tell me I can't say the word "gay" on threat of imprisonment and I'll say it more but that's not relevant to this discussion.
It's unhealthy to just throw every difficult problem at courts; the legal system is clumsy, unresponsive, and often tends to go to unwanted extremes due to a combination of technical ignorance, social frustration, and useless theatrics.