The hallucinations come with some types of seizures. I have had them myself. Years ago I had distracting one-sided audio hallucinations- pops and whistles just as a seizure came on.

This does not mean to say that these seizures or strokes in the film are not vax related. I was speaking to a vaxxed friend an hour ago whose seizures have become so bad she is likely to need brain surgery. She had epilepsy before the vax, but It didn't seem so severe. I am not going to point out the connection to her, I don't think it would help.