Since spam transactions are protocol-valid, nodes must accept any valid block—even if it contains spam. Our spam filters are designed to: - Discourage VC investment in meta-protocols - Signal to miners that we prefer not to include these transactions Please note that MARA (via Slipstream) is currently the only miner processing non-standard transactions, but they appear likely to discontinue the service soon.

So discourage means: restricting someone And Signalling to miners: asking them for permission This does not compute, for me.