This is more leftist parsing of terms, as in the meaning of “is”. There are no actual “visitor logs” as a specific term defining a specific type of log. There are, however, logs that record all visitors, but they’re not actually called “visitors logs”, so they can claim to be technically telling the truth.
RE: There are no actual “visitor logs” as a specific term defining a specific type of log.
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Bill Clinton explaining his log with a nod to Clark Griswold:
“A Yule Log. Not a log, I don’t have a log, I mean, you know... If I had a log. Not in the sense that you think I said I did...”