Removing rules is a hardfork.
That includes scheduled rules like subsidy halvings, and yes, even BIP110.
Rejecting BIP110 is a contentious hardfork attempt.
And unlike softforks, hardforks need cons...
Any word on why miners are not bothering to activate yet? Surely with only a 55% hurdle there's not a lot of incentive to wait until mandatory signaling. Is that 4% really what they're holding back for?
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