I am going to have to at least partially disagree with that. They seem to be casting the skillset net fairly wide.
Let's think back:
The clues that led to the treasure hunt spanned a wide number of topics, including mythology and astronomy
Audio experts, not cryptographers found the initial spectrographs
People who do video or use photoshop have cleaned up images
the Rift mystery is seemingly a lot of word-play and riddles, not ciphers
The nonograms are a type of logic puzzle, not a cipher
Flying over planets to find stuff was not a cipher
The find of the alien ruins was down to a bit of trigonometry in lining systems up
The right system in the treasure hunt was found by simple exploration: Checking if possible systems had the right number of planets and main bodies
The braille was...braille
People keep focusing on the 'codebreaking', but most of it is not cryptography at all. Certainly no pattern analysis has been done. The first three Numbers Stations used a simple A=1 code, so yes: It was a code, but in this case no specialised knowledge of cryptography was needed.
Many have required specialised skill to a greater or lesser degree, but it is not just in a single field.
A bit like Bletchley. they didn't get professional cryptographers in. they got a massive variety of very clever people from a wide variety of fields.
You are probably correct that I oversimplified the issue a bit with my 'codes and ciphers' remark, but in my opinion my point still stands. Even if we take into account all that you mention, the scope for 'intelligence', 'genius' and the ability to think outside the box goes well beyond just those fields too. There has still been a narrow vision from Frontier, look at your list again, many of those subject matters are aligned with each other, (though obviously not exclusive to), many are quite similar, trigonometry and astronomy are very closely related, word play, braille and more are closely aligned too. I don;t blame you for embellishing your list a little to 'prove a point' and as I said I concede I oversimplified it a bit, but lets not be narrow minded here, you can still keep all that, no problem at all, lets have things running parallel to it though.
You go on to say 'no special cartography knowledge was needed', for some of the puzzle, again, this is fine but an interest is needed, I will say it again, it is more than possible to be interested in the story but not in the methods it is being delivered in.
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