I happen to agree with the quote; I just don’t think it’s particularly a quote about rationality. Just because a quote is correct doesn’t mean that it’s a quote about how to go about acquiring correct beliefs, or (in general) accomplish your goals. The fact that HIV is a retrovirus that employs an enzyme called reverse transcriptase to copy its genetic code into the host cell is useful information for a biologist or a biochemist, because it helps them to accomplish their goals. But it is rather unhelpful for someone looking for a way to accomplish goals in general.
I happen to agree with the quote; I just don’t think it’s particularly a quote about rationality. Just because a quote is correct doesn’t mean that it’s a quote about how to go about acquiring correct beliefs, or (in general) accomplish your goals. The fact that HIV is a retrovirus that employs an enzyme called reverse transcriptase to copy its genetic code into the host cell is useful information for a biologist or a biochemist, because it helps them to accomplish their goals. But it is rather unhelpful for someone looking for a way to accomplish goals in general.