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

Quotes that support claims

“You ignore community consensus, you lose trust. Since Bitcoin Core’s OP_RETURN fiasco, Bitcoin Knots has surged from 2% to 11% of nodes. That’s what happens when contentious changes are rammed through,” the user wrote.

In an X post, Dashjr noted: “The goals of transaction relay listed are basically all wrong. Predicting what will be mined is a centralizing goal. Expecting spam to be mined is defeatism. Helping spam propagate is harmful.”