Wasn't the plan of the Infinite Dragonflight to alter time in order to bring about something bad, like chaos or the release of the old gods or the unraveling of time or something like this. Now we're just changing the time and nothing bad will happen? Wasn't the point of all the Caverns of Time dungeons, that nobody should change the past or something bad will happen? Wasn't that the purpose of the Bronze Dragonflight and the newly created Timewalkers?