It turns out they're just updating to native segwit, https://twitter.com/BitwiseInvest/status/1757813223536103568
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0 sats \ 0 replies \ @patrick1 OP 14 Feb
Ok, found the answer: https://twitter.com/BitwiseInvest/status/1757813223536103568
tl;dr: they're upgrading to native segwit.
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