Yes, if a safer alternative is found, then there isn't necessarily a reason to continue with a full risk assessment for that substance.
It also would be fairly efficient for Canada to adopt this now, because so many countries are ahead of Canada already, and we can learn from those other countries. The OECD has collected a wealth of information from other jurisdictions that are doing alternatives assessments.
We can learn from what others have already gone through by adopting alternatives assessments. We don't have to build it from scratch. It could be a very quick and efficient way to bring in something that could be revolutionary with respect to managing toxicity.