Community debate and criticism

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Supporters of the expanded OP_RETURN data limit in Bitcoin Core 30 see it as useful for decentralized identity and messaging, while critics argue it encourages blockchain abuse

Critics, including Samson Mow and Luke Dashjr, argue that the decision to remove the 80-byte OP_RETURN limit in Bitcoin Core 30 lacks broad community consensus and could lead to centralization in mining

Prominent Bitcoin advocate Jimmy Song criticized the update, stating it will significantly increase “garbage” data on the blockchain and worsen UTXO bloat

Samson Mow, CEO of JAN3, claimed that the removal of the 80-byte OP_RETURN data limit in Bitcoin Core 30 eliminates critical technical safeguards, which he believes will open the door to network spam and ultimately compromise node decentralization by raising operational costs and complexity

Luke Dashjr, a veteran Bitcoin developer, consistently opposed the decision to remove the 80-byte OP_RETURN limit in Bitcoin Core 30, suggesting users either avoid upgrading or adopt alternatives like Bitcoin Knots

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