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For context, guluarte is referring to a moderately contentious hardfork done by the Ethereum developers and mining community to reverse TheDAO Hack in 2016 or so. The stakes were much larger then -- Ethereum was newer, not yet battle tested, and TheDAO had something like 10% of all ETH in it.
A fork was formed -- "ETH Classic" -- ticker ETC -- which did not reverse the DAO hack, and you can see from valuations that the public preferred the reversal.
Code is law, up until it costs me.
Other transactions besides the one that created 184 billion BTC in that block was effectively “rolled back” on the working chain.