bitcoin is hard money. it's provably able to achieve this property as is, today.

any update to the protocol has to justify itself in terms of what it's bringing or adding to the existing system. some do this by using perceived problems ("security budget", "inability to use fancy new lightning channels", "ability to make bets on future outcomes (DLCs)", "running out of blockspace, how do we scale?")

each of these justifications is based on a core value, which is rarely "hard money", as that usecase has already been solved.

currently there's no pressing justification for making changes to the chain. until there is, i think it's difficult to build consensus for a change.

(notably, taproot was fairly uncontroversial imo because it spoke to a value all bitcoiners wanted more of: less blockspace usage and more privacy.)