The article misquotes Steam’s rules. Here is what Steam says:

> Applications built on blockchain technology that issue or allow exchange of cryptocurrencies or NFTs.

And the article:

> Games that use blockchain technology or let users exchange NFTs or cryptocurrencies won’t be allowed on Steam …

The problem isn’t the blockchain, it’s blockchain-based cryptocurrencies and NFTs.

Granted, I don’t know why you’d use a blockchain in a video game other than cryptocurrency or NFT reasons.

But it’s unfortunate that “blockchain” is apparently synonymous with proof of work cryptocurrencies and NFTs.