This is a non-issue.
I’ve heard people refer to it that way before. Non-issue is right.
I don’t see at as a big issue. I do see it as an indicator that he us not very familiar with how most people quote scripture references. Which could possibly be an indicator that he doesn’t spend much time with scripture study. An observation to add to your picture of the man.
It is a very tiny issue, although I find his refusal to take responsibility for anything troubling.
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