Actually, I think it is just a cop-out. An excuse to justify people's own misgivings or failures or hang-ups. Whatever.
Look if people want to vote DA let them... if they are smart enough to figure it out.
But don't spend your life chasing after fickle voters.
If you can buy their vote by soothing them, or placating them or by chatting them up nicely, then somebody is going to come along and talk them right out of it.... or offer them a food parcel as a bribe.
You are never going to win like that.
People need to vote out of a strong conviction, not some temporary trite ten minute change-of-heart.
If your convincing of them fails because some moron on the internet somewhere said something disparaging about them in an off-handed third party way, then I think you seriously need to get a life... and they need to stop being so damn sensitive.
it's not about the individuals, it's about the country.