You could just have written that we continue to do nothing serious about climate change. That will disrupt society enough that history disappears as people use their energy trying to survive in a world that has fallen apart.

The society that results will use its energy to look forward, not back, as it’s resources don’t allow for all the effort required for the upkeep of historical records.

Just going off what has happened in the previous examples of society breaking down; and this one will be much, much worse.