A common argument presented by inscription supporters is that Satoshi started the trends of injecting data in the timechain with the Genesis block message. This argument is simply wrong since Satoshi did not subvert (2nd characteristic of spam) the protocol to "inscribe" data, he simply used space already available in the Coinbase data that is designed to allow miners to broadcast arbitrary data when a block is found. It's always been part of Bitcoin and didn't introduce any wastefulness.More information here.