That...remains to be seen in your timeline. In mine, its far too late. The Republic became an Empire, and there was a civil war. We, the Rebellion, were victorious though even twelve years later we're still fighting the Imperial Remnants.

[He does genuinely hope that perhaps, maybe, there is a way Anakin learning this can make a difference. A chance, maybe, for them to find a way to share memories 'back home' and stop the threat of Palpatine once and for all, before he can even get started]

Its not quite written in stone. Perhaps there is a way to make a difference, but we cannot know.