Twitter- in fact modern life, particularly the present edition of the USA - proves beyond a shadow of a doubt that engaging with non-progressive people with the intention of converting them leads to, eg, former MPs feeling free to post BNP-level racism on main.
Even after their fifteen year losing streak there remains an element of the fake left who believe that 'we need the debate' and that you can neutralise Nazis by trapping them in your ineluctable web of logic. They still think that sunlight is the best disinfectant. It's not. Fire is.
however, I do have legitimate concerns about the nO dEbAtE yOrE A bIGoT approach, it hasn't really worked out for those people.