That is pretty uncanny. I had to double-check the caption in the
article's photo to make sure the example was German and not Egyptian. Here's an actual ancient Egyptian example, which I believe it comes from the tomb of Tutankhamun:
There are other chairs that might be even better comparisons but I can't seem to find any Google images of them. What's also unusual is that the only complete one known in Europe dates to 1389 BCE, according to the article. Tutankhamun died around 1324 BCE, so that German chair is from the same time period as the boy-king. This was around the height of the Egyptian empire in the Late Bronze Age, so one can't help but speculate how the design of the folding chair reached northern Europe.
We know Egypt was interacting with Mycenaeans in this time period, although to what extent is not clear. The two peoples traded with each other, to be sure. So perhaps the Mycenaeans got their hands on one or more of these chairs, brought them home to their island or mainland polis, and from there somehow the design went north. We can only speculate but it's very interesting.
As much of a skeptic as I tend to be about things, even I can't dismiss the similarities in design. It's more than a coincidence, in my opinion, although I would argue against direct contact between Egypt and northern European peoples in the Bronze Age. An intermediary had to be in play, I believe. Egyptian designs and styles spread far and wide in the Persian, Greek, and Roman periods, but those were much-later times. This chair design is considerably older.
Really interesting article, Melo. Thanks for posting it.