I read that 95{88c91daedd271a990a10650c05d769cae2765e0603edf30ca95f18704e5748e8} of miners need to signal for segwit for it to happen? If that's true, it seems super unlikely to get there. A 5{88c91daedd271a990a10650c05d769cae2765e0603edf30ca95f18704e5748e8} group has veto power. Do I not understand things fully, or am I right?