Even the Force did not foresee this. To be fair, the Force was binging on Stranger Things season 2 at the time.
The changes are targeted at specific class skills that are under- or overperforming according to the developers’ perspective. The dev team did take the time to list all of the changes and explain why the changes are being made.
This update will come after the server merges that are coming in about a week. To prepare players for the merges, SWTOR recently gave all players more character slots on all account types.