It looks like that condition is checking order.paymentTerms.draftOrder.taxesIncluded, which may not be relevant here unless your orders are originating as draft orders. You may instead want to consider using order.taxesIncluded, which checks against that field on the order returned by the “Order paid” trigger. You could also consider checking if order.totalTaxSet, which is the total tax amount before returns, is less than or equal to 0.