[qsort]

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.

[cellular]

Hmm i found 7 wonders and dominion to flatten out in strategy quite fast.

Dominion requires to monitor cards that while helpful initially,can burden your hand in the end.

[jamesgeck0]

Dominion has a fair amount of depth, but it seems common for individual player groups to get hung up on a particular play style and decide that they've found the ultimate strategy.

[Taikonerd]

In support of Dominion: there are a million expansions that add new cards and mechanics.