Blackrock disclaiming the 21m cap makes no sense from an educated bitcoiner perspective. It does make sense from a fiat brained perspective.

They already laid the groundwork for this scam. Their ETF already disclaims that in a hard fork event they will be forced to choose which to hodl in the ETF and which to dump. By contract you agree to by buying IBIT, they are not liable for any losses yoy incur if they choose the less profitable fork.

That means they can fork to create IBTC with a 42m cap and sell all of the real BTC to line their own pockets with fiat. Wait a year or so, and launch a new bitcoin ETF. Repeat forever.