No person shall be considered to have engaged in a practice of unlawful discrimination on the basis of age discrimination unless the practice violates RCW 49.44.090. It is a defense to any complaint of an unlawful age discrimination that the practice does not violate RCW 49.44.090. (Added by Amended Ord. 10-021, June 7, 2010, Eff date Aug. 21, 2010; Amended by Amended Ord. 16-034, June 1, 2016, Eff date June 15, 2016).