This is correct, the right is already blinded by anger; telling them how stupid they are only makes them dig the hole deeper. If people want to change the way those people vote the only solution is redirecting their anger.
The entire dnc seems to be blind or dumb with their approach in the last 3 elections. It's all algorithmic, the Dems appeal to intellectuals but their message is too old school to get those uneducated voters who cling to a single issue to even listen. Get fucking angry, show some humanity, entertain, drive views, algorithm pushes your content, you brainwash the idiots instead of letting your opposition. Sure it's grimy, but it's better than spreading your cheeks and saying "they wouldn't because of decorum!"
Gullible yes, probably motions too. You can be extremely intelligent and still have massive blind spots. My mom and Grandpa are both conservatives but I'd consider them intelligent. I was able to have discussions with them and convince them a lot of conservative policy is unnecessarily cruel and short sighted. Got both to promise me they wouldn't vote for Trump, but they're fiscally conservative because they've got money.