You appear to have skipped the introduction (which comes before the statement about this being useful for non-human operators like bots) where it says:
>> This request code may be used to provide visibility in cases where one or more valid requests create a dangerous situation, there is a pattern of erratic requests with the potential for danger, or the requester is otherwise detected as impaired.
Why this is considered necessary is explained in the next sentence:
>> Network-controlled devices are being used for beneficial but potentially dangerous activities such as construction and remote surgery. Identifying requester impairment is important for both accurately assessing the risk a given requester presents and preventing damage caused by a high-risk requester.