It's just not a place for engaging in thoughtful nuanced dialogue.

It does seem like Twitter, of all social media outlets, may be particularly bad in this regard just because there's such a limit on writing length. Almost all of my best experiences on Saidit-- discussions that I learned from, that changed my perspective, or that allowed me and a conversation partner to really open up with each other-- all involved much longer chunks of texts than... what... 140 chars is the limit? Amount/length of communication is often the "least common denominator" when it comes to communicating nuance.