That's a pretty fair assumption. It would also mean that 2% of pretty much every food should contain a bit of human DNA, making hot dogs a moot target.
Though the submitter was the one that added the sensational headline. [edit: headline was changed]
They do say, "While some of these substitutions, hygienic issues, other variances, or off-label ingredients may be permitted by the FDA, our scientific disclosure allows you, as the consumer, to decide whether the variance or problems meet your personal standard in your buying decision."
Some of these problems like pork in pork-free products or having 10g protein as opposed to 25g seem to be big problems that need some sort of investigative follow-up like contacting the companies for a statement about the findings.