Yes, I agree that if the pilot (assigned 3D and staying there) tries to arrange a seat swap between two revenue passengers (3A <> 3F), then it's not a company policy violation. Not in the job description

but certainly not a policy violation!
My first read of the original post had me thinking that the allegation was an AA employee requested a seat swap with a revenue pax for the employee's benefit. That would have been clearly against policy.