" This is nothing to do with double negatives. She just repeats "at all" to emphasise it. "appreciate" (in this sense) is a transitive verb, so it needs an object.
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moon7296 "I`m not at all knocking korean man at all"As MrWordy says, this is not double negation, but it's certainly bad form to repeat "at all" in this way. I'll see if I can find examples of similar repetitions which are not so objectionable.