No. I am not wrong. Thanks for trying though. I (along with everyone else who isn't anally retentive about titrating the psi to a fraction) have been following the manufacturer's recommendation for years without issue. If you're racing / competing - sure, everything counts. But for the majority of people who hop on a bike and go, it is unnecessary.
Sheesh, you'd think after a dozen years of me being "wrong" something would have... you know, gone wrong.