Avi
While I am familiar with that position, it is definitely a דעת יחיד and a dangerous one to utilize on our own
Pig is only forbidden because in those days…..
Marrying an aunt is only forbidden because…..
As a matter of fact before matan Torah people married their sisters, maybe that too is only assur temporarily
Lighting fires on shabbos is only assur because it was tons of work…..
Wearing shatnez is only assur because…..
You can negate any part of the Torah you are so inclined, with that line of reasoning.
Rav kook was a great man. But He certainly was an original thinker