As yosh64 quite rightly points out, RL has always been prepared to continually evolve/change its laws to improve the game. Unless you have a simple sport, such as cricket or baseball, you must continously look at the rules and refine them.
Unfortunately, at the same time, many RL fans and administrators are averse to change. So getting the balance right is difficult.
The current laws of RL (and RU) are still built upon the first documented laws of 1850s Rugby School & the RFU in 1871. In the ensuing time, they have been amended into the form we use today. Unfortunately, the original laws were written for gentlemen & schoolboys who would play with honour (as cricket supposedly still is) - meaning the laws didn't need to address "grey areas" - there were no "grey areas" as players would not cheat or look to get the better of the rules/referee etc.
The words "accidental" and "deliberate" have clear meanings when a sport is played by gentlemen footballers who openly admit their actions, but today no professional footballer would ever admit anything that would cost their team the ball or a penalty.
Now that we truly have professional footballers/coaches/clubs and success/failure can decide the viability of their employment/finances, everyone is pushing the rules and the referees to get an edge.
The biggest problem is that penalties are now worth so much i.e. a 40m kick plus 6 more tackles, that everyone is pushing to get one against their opponent - they should be playing football, not trying to earn penalties.
The quickness/slowness of the play-the-ball has become the winning/losing of the game, when all it is meant to be is a means to restart the game - now it is the game.
It seems to me that - as soccer and American football did decades ago - the time has come for RL to completely re-write the rule book and get rid of all the "grey areas" once and for all.