There's a Portuguese saying "há mouro na costa" which is literally "there are moor at the coast" and means that there is something fishy going on.

Curious, in Spanish we have the same saying, but always in the negative version ("no hay moros en la costa") which is something you say when you're doing something secret and there is no one around who could see, hear or cause trouble.

In the UK we say 'the coast is clear' when telling someone that 'there is no-one around to see any misdeeds you're about to do'. Nothing about Moors, nor even Spaniards!

The Moors existed about 1900 years after the Sea People of the Bronze Age.

I don’t think they’re implying the moors are responsible for the Bronze Age collapse, merely drawing parallels.

In an alternate timeline, The Sea Peoples are Romans sailing to England, the Anglo-Saxons, the Normans. Things became fuzzy when the English themselves became other civilization's Sea Peoples.

I would wager that almost every civilization has been some other civilization’s sea people at some point in it’s history.

If invaders appear out of ‘nowhere’, it’s usually by boat or on horseback.

Well, at least not civilizations where dreams dry up.

And don't forget the Vikings, who may provide the best analogy to the Sea Peoples.

I wish the author would go into detail about the sea peoples. From what I read, one theory is that they were subject allies of the Hittites; once the Hittites collapsed they went in search of better farmland with their entire families.

The actual historical evidence is super thin outside of a stele in Egypt.