OP_Return isn’t spam. It’s additional information associated with a transaction, do some people manipulate that data for various intended purposes sure. But they paid for their space on the blockchain, the miners were paid fairly. If you don’t want to host it, either prune your node, don’t run a Bitcoin node, or hard fork Bitcoin. Ordinals, are down from its ATH. It’s like removing the ability to assign mortgage contracts, stock certificates, or treasury bonds to its holders, sometimes transactions need additional complex transaction information to engage in the transaction. OP_Return is purely a financial transaction because even Visa transact it sends encrypted tokens, date, time, location, etc. information.