[zitterbewegung]

I did some actual research in making a delayed choice quantum erasure system and the TLDR of why any of these "time travel" results is that what you have to keep in mind is that it is that the entanglement you create you have to still use a classical channel of information to transmit the information as a result which is still bound the speed of light which is what the quantum erasure systems must also show that it doesn't occur.