That kinda makes sense coz we have both predictive WS and active WS warnings
.. and limited, finite energy.
If the available energy on the day the procedure is put to the test is not-quite-up-to-it then the alternative procedure with an extra 20kt or so ... might just make the difference between success and failure.
Of course, the particular met circumstances may defeat the Boeing procedural approach as well .. but the latter, for the intermediate circumstance .. offers the better overall risk plan, I suggest.