Why is "Abstract strategy games" trending?

Wikipedia Overview

Abstract strategy games are games like chess, draughts and Go. They are typically strategy games with minimal or no narrative theme, an outcome determined mostly by player choice, and in which there is little to no hidden information. Many abstracts are also perfect information games. Pure abstract strategy games are typically deterministic, fully observable, and governed by simple, explicit rules whose strategic depth arises from combinatorial complexity rather than chance. Abstract strategy games are also games of analytical skill, usually with significant depth or strategic complexity. Skill grows over time as players develop experience, and a greater understanding of a specific game. Experienced players with greater ability to analyze multiple moves in advance will almost always beat beginners at abstract strategy games.