Earlier quoted context omitted.
I strongly agree with this position. This is basically the foundation of Control Theory! https://en.wikipedia.org/wiki/Control_theory This is like arguing if "heater on" or "AC on" is better, which is a pointless argument. That entirely depends on what the temperature is!
It is the perfect and correct antidote to any slippery slope argument. If the consequences of the law turns out to be as bad as you say they will be then we adjust the law.
Control Theory does not work (in the general) for politics for the simple reason that incentives are misaligned. That is to say that control theory itself obviosuly works, but for it to be a good solution in some political context you must additionally prove the existance of some Nash equilibrium where it is being correctly applied.
Edit: See https://www.youtube.com/watch?v=rStL7niR7gs (CGP Grey - Why Do All Governments Work the Same Way?)