I think I'll stay neutral in this debate

. But I do know that free/ award tickets are exempt from certain US taxes that apply only to money-paid tickets, such as US 7.5% tax, "ZP" $2.50 (?) segment tax, "XF" Psgr. Facility Charges. However, free tickets are subject to the $5.60 TSA Tax and to US Customs/ Imm./ Agricutural Inspection taxes.
I assume that airline-employee non-rev. tix are exempt from all of these.