Attempts to restrict Bitcoin transaction types through consensus rule changes will ultimately fail because users can continue encoding data in alternative ways regardless of protocol restrictions.

"Critics, including Saylor and Blockstream co-founder Adam Back, argue that consensus rules should not determine which currently valid transaction structures deserve block space. Saylor said fee markets and individual node policies offer a safer response to disputed data use."

"it is fundamentally impossible to restrict how other people use external software to analyze entries on an open-access public ledger. Worse yet, the folks who use such disapproved ledger entries have already updated their software to continue making such entries even if BIP110 were to become Bitcoin's consensus rule set."