No, look, the question is how can we detect intelligence among all the information we get from the stars.
That may be the only question
you are interested in, but it is far from the only one that Straggler posed in his OP to which JBR was replying.
Someone talking about DNA is not addressing this question
JBR only spent half a sentence mentioning DNA after four paragraphs about how he thinks SETI should approach things. Are we to take it that you have no objections to the model he wishes to apply to SETI?
TTFN,
WK