Hold up. I'm not following you on this one. It looks to me like he is attacking her, albeit in a vague, lame way. Bringing up her lies doesn't exactly help her.
I guess in my ideal candidate, I see them calling out each of her lies. Hammering away at Comey's description of her crimes, and failure to indict.
"She is soooooo guilty" isn't an attack. It's a passing tweet from an unserious candidate. He's yet to lay into Clinton in any meaningful way. Calling her "Crooked Hillary" isn't doing damage. If he cared about taking her down, he would focus on why she's crooked. Name-calling isn't enough.