I am not an expert in this space, so hopefully an actual expert will come by and clarify, but I am pretty sure that "The current consensus [...] is that there was no such thing as ‘the sea peoples’" is just flat out untrue. (IIUC, what is the current consensus is that they did not "cause" the late bronze age collapse). That colors how I read the rest of the review. Edit: Personally, I enjoyed that particular addition…
Willson is actual expert. I also think that it is ok to be unrealistic in myth movie.
r/askhistorians, which as far as I know is reliable, does not seem to dispute that they at least existed. https://www.reddit.com/r/AskHistorians/comments/1mwbdpd/why_...
Edit: Charitably, it could be awkward phrasing - not that the sea peoples didn't exist, but that the whole hypothesis around them is believed to be off.