I interpreted it as: if you include all hobbies and games made by humans in history, I'm pretty sure most of them involve a set of cards made of paper, some others involving wooden figurines (chess, checkers) or even drawing on dirt with a stick.

A computer is many, many orders of magnitude more complex and expensive than that.

This isn't said with the intention to demonize expensive hobbies if no one is harmed because of it.

But I do sometimes wonder if my hobbies are too dependent of a power plug. Even reading, which I do with a e-reader.