Granted that we can pretty much enter anything into our log books as long as
we are willing to sign the true and accurate caveat at the bottom of the
page.

Here's a hypothetical scenario. CJ gets an invitation to go for a ride in
ER's rotary wing machine for a 30 minute hop around the town. CJ is PP ASEL
without a helo endorsement. ER is fully qualified to fly the machine but
does NOT have a CFI cert. CJ asks ER to 'sign' his log book showing that he
did a 30 minute flight in NXXXX. No entry is made to show any dual, nor PIC
time.

So what's the point? I suppose the entry tallies up another 30 minutes in
the total time column. I'd have another hundred hours in my log book if I'd
tallied up the number of times I sat in the front seat and never touched the
controls. How about riding in the back seat? Or seat 18C on Southwest from
LAX to Phoenix?