How many non-engineers would you expect to take the interest/time to investigate rainbow tables after this? Also, if you follow the link to the actual presentation (
https://sudo.pagerduty.com/for_everyone/#hashing for the lazy) then you'll see the author DOES indeed call it hashing, before switching to "magic" so as to make it easier for individuals without a technical background to not have to constantly think about what the term means.
Also, if you continue to RTFA,
> That said, I didn’t want to mislead people. So we chose to be clear to them that there is a technical term; it’s just not going to be important for the rest of the content.
If it's someone job to provide reports/updates on something related to the concept, yes they should know it, for anyone else in a non-technical role, why does it really matter?