I know a lot of Sanders supporters and not a one of them has gone through this dubious “conversion” towards disliking him. Plus the Clintons are notorious for dirty, lying, manipulative politics, and these “I used to like Sanders but, but, but..” screeds are all over the web, with the same cookie cutter narrative, and the same weak and dishonest arguments. They’re Clintonian PsyOps.
Sanders supporters are like Sanders: they’re principled and loyal.
Clinton supporters are like Clinton: dishonest, manipulative and self-deluding.
So I’m guessing you’re a Clinton supporter, and you always were.