There is an added complication to doing a hard fork rather than an automated parameter change. Validators, the equivalent of Bitcoin’s miners on Cosmos and other proof-of-stake systems, could choose to continue monitoring transactions for the original chain, as with any blockchain hard fork. But there would likely be few users remaining on that chain, particularly after the fork of a relatively small project like Juno, making the choice to continue the original chain financially risky for validators.
Source: https://www.coindesk.com/layer2/2022/03/16/junos-proposal-16-vote-is-a-watershed-for-blockchain-governance-for-better-or-worse/?utm_medium=referral&utm_source=rss&utm_campaign=headlines