No, Danny is wrong. The "serious" people talk about fare evasion all the time. Nobody's afraid to touch it. The real third rail of Sound Transit is CAR TAB EVASION, which costs Sound Transit far more revenue than fare evasion, and yet that's a conversation nobody seems willing to touch.
Both the Metro bus system and Link light rail have now said that more than a third of riders don't pay. The rule-followers are starting to get bitter about this.