Requests API Basic Authentication Supported

https://developer.zendesk.com/api-reference/ticketing/tickets/ticket-requests/#authentication 

This link mentions: You must use an API token or an OAuth token with this API. Basic authentication is not supported.

However, as we tested, we can always call the API with basic authentication.

******@Ubuntu-Desktop:~$ curl -ss https://xxxxxx.zendesk.com/api/v2/requests -u enduserzendesk@gmail.com:REDACTED! | jq '.requests[].id'
141141
144115
144122
...

Is documentation incorrect or am I missing something?