If you mean that he'll be the victim of an insane amount of left wing propaganda spin to portray him as a hate-monger, then yes, I agree.
That's why he'll never be given a prominent slot. This convention as been too carefully packaged as "centerist" for them to risk that.
Keyes will likely do the same. High profile convention and a high profile race. Dr. Keyes has many good qualities. He also is an egotist. Egotists don't know when to speek up and when to be quiet.