This struck me as a strange analogy, considering DNA's inherent fragility, but it would make more sense compared to modern software than hardware.
Alternatively, it also makes sense if "hardware" means a particular model/architecture, with DNA corresponding to an HDL, rather than an instance of hardware (e.g. single CPU, server, or smartphone). A frequent enough topic on HN is the challenge archivists have with archaic software and data formats, even if all the original collections-of-bits are faithfully preserved.