This is not true. Your access to your credit report or credit score does not affect your score.
There are different types of credit report inquires. The only one that "counts" is one that is made for the purpose of granting you new credit.
Existing creditors usually do periodic reviews. Those are different types of inquiries, which don't affect your credit score -- unless they screw up and designate the wrong type of inquiry.
Credit inquiries made for the purposes of a job application may affect your score, depending on how it is coded. Credit inquires made by the US goverment "Office of Personnel Management", or OPM, do count against your credit score -- even though they shouldn't.
I'll leave the reason for an OPM inquiry as an exercise for the reader. I'm sure that some of you know why.