If you consider 27 "approaching 30" then yes. Last season was his least productive since 2015/16. He scored 10, 9 and 7 in the previous seasons plus assisted 26 goals in total during those three seasons. A Zaha of 2018/19 would walk into most PL teams (10 goals, 10 assists). But IIRC didn't he mostly play as a forward that season?