Really disappointed to hear that. Read BIP 444 for yourself. Written by Luke but submitted under a new nym and a new github account to mislead people. It creates a "soft fork" that grants them chain rollback power. They are lying about it being a soft fork. If they never rollback no point activating it. If they do rollback it is a hard fork from the people who don't, no way around that.

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"If, however, some content appears in the chain that causes significant risks, we can fall back to the reactive method, which is a retroactive chain reorganization to invalidate the offending block (and any subsequent blocks) while immediately activating the new rules." From