No, because remember, the grantor is never anything else at the same time. This is because the role of the grantor begins and ends right at the start of the trust. Because these are irrevocable trusts, the grantor signs off at the beginning and relinquishes all further control irrevocably. That is one of the main sources of the invincible asset protection.
Then that individual can wear other hats, except trustee. He or she can be a beneficiary as long as he is not the only beneficiary. This does not weaken or discredit the legitimacy of the trust or the strength of its asset protection.