It is standard EPA wording.
There is no legalese wording such as “insignificant,” but only various definitions throughout the regulations stating things to the effect of “Biologically Significant” meaning
because of the higher potential or more lasting consequences of harm
So the findings of the EPA study and their wording indicate that there is not a higher potential or lasting consequences.
Which as difficult as it might sound for some folks here ...matches the company’s MSDS.
Despite your handwaving assurances,
one doubts that DNA intercalation effects,
long term, were done.
One doubts all systems were tested in human infants who
will now be exposed.
Given the coverup of regulations involved to this point,
I doubt there have been any serious definitive substantive
studies examining the full range of sequelae.