Hello!
As such your decisions relating to the above overide any other laws.
Yes, but really only in an emergency. Like in your deteriorating weather example. In all other cases, you as the commander must base your decisions on the laws in force.
I personally know of several cases here in Germany where continuing flight into adverse weather conditions by non IFR-rated (but obviously capable) pilots has resulted in accusations of "endagering the safety of an aeroplane and its occupants in grossly negligent manner". The prosecutors/authorities have won every time.