The article is more about a certain style of "modern" games, which is an interesting strand but does not exhaust the category: classic games (chess, go, shogi, backgammon), card games (bridge, poker), TCGs (magic the gathering, hearthstone) often are as complex and sophisticated as any of those.

If you're looking specifically for games in that style, Twilight Struggle has been studied extensively and there's significant competitive play and a well-developed theory. 7 Wonders Duel and Dominion also have significant depth.