Can I suggest that those in EK carefully read the OM-A section regarding approach type selection. Particular mention is made of flying ILS approaches with tailwinds as opposed to a more suitable approach to the opposite end.
Radar vectors to a visual approach are considered an instrument approach to the minimum radar vectoring altitude.
The whole section as far as I am concerned is written to allow pilots to use their common sense!
If people are refusing to accept radar vectors to a visual approach on a CAVOK day with no other significant threats , then I think that says more about the confidence in their own ability rather than compliance with the OM -A.