That whole thread was basically full of former radlibs who were never particularly radical and "deradicalized" because of "disappointment with the Sanders campaign", the like one honest answer was the dude who said "a mortgage and a 401k". Oh and for a lot of these "former radical leftists" "disillusionment" was usually getting yelled at online. Real coherent politics these people have.

Also lots of former Nazis who got their politics from fucking YouTube videos and "mellowed" after getting disillusioned