Actually, thanks to the bitcoin community, NIST has updated that section

"Thank you for your comments. You, along with many others, expressed concern on section 8.1.2. To help foster a full transparency approach on the editing of this section, I am sending the revised section to you for further comment.

8.1.2 Bitcoin Cash (BCH or BCC1) In 2017, Bitcoin users adopted an improvement proposal for Segregated Witness (known as SegWit, where transactions are split into two segments: transactional data, and signature data) through a soft fork. SegWit made it possible to store transactional data in a more efficient form. However, a group of users had different opinions on how Bitcoin should evolve – and developed a hard fork of the Bitcoin blockchain titled Bitcoin Cash. Rather than implementing the SegWit changes, the developers of Bitcoin Cash decided to increase the maximum blocksize (additionally the developers made changes to other aspects of the system, such as the difficulty adjustment algorithm). When the hard fork occurred, people had access to the same amount of coins on Bitcoin and Bitcoin Cash.

1The ticker used for Bitcoin Cash differs depending on the exchange; some use BCH, some BCC"

bcash fans must be pissssssed lol