You can not depart on a VFR flight from A to B unless the actual and forecast weather indicate that the flight can be made VFR.
You can not depart on a VFR flight from A to B when the actual and forecast weather at B is less than VMC even if you have a VMC alternate C. What you are doing in that case is departing VFR from A to C with the posibility of changing the destination later to B if the weather improves.
You're making it up as you go along, once again DFC. This is in your imagination, not in the legislation. In the same way that an IFR flight may depart with its destination below minima provided it has a suitable alternate, so too may a VFR flight. Article 49 does not even distinguish between a "VFR flight" and an "IFR flight". Its provisions refer to flight rules only in the context of anticipating IFR at the destination.
Too many pilots depart on what they call VFR flights knowing full well that at some stage they will probably have to fly IFR.
And your point is well made, and relevant here. You don't need to invent regulation to support it.