Jack Dorsey, the extend-o-bearded CEO who co-founded Twitter and whose fame grew with that of his increasingly powerful platform during the Trump years, resigned today. His departure is the latest plot point in a long-developing Internet tragicomedy, which has seen what was supposed to be a historically democratizing technological tool transformed into a dystopian force for censorship and control. The departure of Dorsey, the rare CEO who not only has a conscience but appears to consult it more than once every few years, is bad news for those who already had complaints about the company, which during his tenure came to occupy a central role in what’s left of American intellectual culture…