If Im an FO or not has nothing to do with the discussion. Its a company SOP that has been come upon by the company and Boeing. The company has used the experience of its TREs TRIs and Boeing etc etc to come up with the SOP. As a Captain should I bow to your knowledge and ignore SOP and ignore the vast experience (greater than your or mine) that has decided on the SOP....I think not. Yes I have diverted many times though not from a Cat III approach.
Part of it is that at 50ft you dont have time to analyise the situation weigh up all the possibilities and make a decision, you have to react. I have been trained to react and Go Around.
Trying to label me as just an FO (so I dont know what Im talking about) belies a lack of CRM. I hope on YOUR flight deck the FO isnt just an unnecessary apendage with no input till the day you make a mistake and he/she is ignored!