Cuz it introduces all kinds of technical issues. If xt ever happens (i doubt it) you'd see it turned into a shitcoin with problems to sync up and huge recource consumption. People will very easily go for another coin then.

Also the risk of two viable chains existing after fork will spook investors massively and btc won't be worth a lot anymore until the fork happens. Could be near worthless after fork.

I don't think bloomberg knows this and they are talking out of their ass as usual btw.