While initial versions of the hypothesis regarded the Sea Peoples as a primary cause of the Late Bronze Age collapse, more recent versions generally regard them as a symptom of events which were already in motion before their purported attacks.
This. As I understand it, they were really refugees escaping famines, regime collapses and other hardships. They were seeking better opportunities. While they did cause strain where they landed, the primary reason for the bronze age collapse was due to the famines and such. Essentially, as the dominos fell, the world economy fell as well. More famines and the like, and, hence, more refugees, being the result. It honestly resembles our current state of affairs world wide so much it's ridiculous.
Edit: I love typing on phone keyboards and having more mistakes than properly spelled and formatted sentences.
A question that I've not seen addressed: The Sea Peoples showed up, raided, invaded, really successfully. Why didn't they stay? Why did they go back to wherever they came from? Isn't that what the Vikings were doing in Britain (also Normandy?) for a while before they decided to stay there?
The most likely scenario is there were immigrants fleeing their homelands for a better life.
The problem with history is we just up and belief what the rules say is true. We know from centuries of more detailed records that is simply not true but when it comes to ancient civilizations we just wholesale accept it.
"Look the despot wrote it down a dozen times, it must be true! Propaganda is beyond their level of cleverness of those silly stone chiselers!"
The problem with history is we just up and belief what the [rulers] say is true.
I think that's what you meant? If so - no "we" don't. Actual historians are well aware of the possibility (probability?) of ancient propaganda, take that into account when coming to conclusions, and don't claim that something is true beyond what the evidence demonstrates.
Not a historian, but my understanding is that there was widespread crop failure, which led to many people fleeing to major cities to search for a better way of life. Many of these people traveled by boat, which led the home country to view them as sea people. The influx of immigrants further strained the dwindling resources of the home country due to the aforementioned crop failures, which then led to a collapse of many of the cities. Which in turn caused more people to flee to other cities
So to answer your question, I don't think the sea people were really even a singular group people, it's just an umbrella term for immigrants that were fleeing from their home
I'm sure scholars know why my hair brained theory is bogus, but what happened to the other 999 ships voyaging home from Troy? Also wouldn't it be easier to maintain a 10 year siege if you were doing a bit of coastal raiding the whole time?