The author (Tim) appears to be in Germany; under German copyright law he in principle has the moral right to be identified as the author of any computer program he writes, just as it if were a book or piece of music.

Unlike other types of work, this isn't necessarily true elsewhere (eg in the US & UK), but I understand moral rights originate from France and German and are especially strong there.

(I see that page now mentions "Credits: CloudWatch Synthetics Recorder is based on the Headless recorder. " - is that new? )