I disagree with the service writer and would insist or even do the job myself. It seems that a few years ago businesses started with this line that you always have to have the tires with the most tread on the rear. So now when you buy tires with free rotation you can't actually get a free rotation. A 32'nd of an inch difference front to rear is a ridiculously small amount to deny rotation.
But I also remember a service writer friend who calculated that paying an half labor (say $50) for a tire rotation every 5,000 miles would cost a set of new tires by 60,000 miles. $50 times 12 services = $600 So it's possibly cheaper to just never rotate the tires and save the money for the replacements.
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2001 Suburban 4x4. 6.0L, 4.10 3/4 ton **** 2005 Jayco Jay Flight 27BH **** 1986 Coleman Columbia Popup