Earlier quoted context omitted.
Right. Just like you don't trash-talk about about your ex. No good will come of it.
I'm of the mind that only good comes of it. It's very therapeutic and who cares what they think anymore. Besides, that's one of the few things that no one faults you for - it's almost expected. I highly recommend it.
When a prospective employee trash-talks their former employer, they'll do it to you, too.
No hire.