It is all these forking clones, that add another 21 million Bitcoin. BTC will have 21, like Satoshi had in mind. The splitters add 21 million with every new forking clone, like BTG, BCH, BTU and B2X. In effect this will take value out off the first ever Bitcoin blockchain, BTC and move it to these forked blockchain clones.
It is ironic to read these people that make these forking clones call themselves Bitcoin purists... Sure, this was how Satoshi Nakamoto wanted it. Split the BTC blockchain up in 5 different kinds adding to a grand total of 105 million.