Hm, why are people euphoric about BIP100 superseding BIP101?

AFAIK, there is no implementation yet of BIP100, and its details are not even fully specified.  (Is there one?)

Moreover, BIP100 will allow blocks larger than 1 MB, won't it?

Moreover, BitcoinCore does not implement BIP100, and so fat Blockstream has been totally opposed to any increase.  So, if BIP100 gets into effect, it will be by some other implementation, right?.

Am I missing something?