Those who believe in the big bang say that there was an inflationary epoch during which particles traveled faster than light - just like the Standard Model virtual particles within collider experiments which temporarily violate conservation of energy. Then, all of a sudden, for no discernible reason, we are supposed to believe that the laws of physics suddenly changed and everything that happened since must travel at less than the speed of light. Wild story. I saw Andre Linde tell it in a SLAC conference room when I was just a child. I've since been amazed by how much sand castle empire building resulted from this lark. Some of those who founded the theory have since abandoned it.
https://blogs.scientificamerican.com/cross-check/physicist-s...
The man who stood by it won the 2019 Nobel Prize (James Peebles). Loyalty to the group pays off.