Around the mention of "Chakobsa" as the Fremen "native" language (Herbert used "Chakobsa" to refer to any of a number of "hunting languages"), I realized this reviewer hasn't actually read the damn book since age 10 and is confabulating most of the review from pairing together the movies with some grad-school seminars.
Herbert did display his deep thinking on enviromental phenominon, and how those are shaped and evolve, with many mentions of deliberate control and modification, but there was no sense of protest or victimisation by or forthe enviroment. Rather there was a continious comentary on human adaptability to, and ability to thrive in almost any enviromental condition, which is only a reflection of the reality on this planet. And as to languages, there are many specialty ones, including "battle languages" , and others. Such as the "code talkers" navajo tribes members who could speak on open air, durring WW2, there native tounge, cheerfully conveying doom for the Japanese. I cant and wont, watch the butchery of Herberts work, which is something he wrote about and addressed directly.
> there was no sense of protest or victimisation by or forthe enviroment.
My biggest gripe with the Villeneuve films is their attempt to make the Fremen into stereotyped "anti-colonial" protestors in ways that mix together Algeria and the Amazon Rainforest and wind up precisely resembling neither real-world example nor the book's original Fremen. The book has none of this garbage about the rape and robbery of the delicate Arrakis ecosystem, and even makes the Fremen themselves into the human agency that threatens the sandworms' viability in the sequels.
Beyond just the ecological matter, in the book the Fremen are "free men" (see?) not because they're "oppressed" by Imperial spice mining, but because they escaped from Imperial rule by refashioning themselves to the deep deserts of Arrakis. Hell, in the book's canon, the Harkonnen and Imperial rulers don't even know how many Fremen there are, by an order of magnitude, because the Fremen are not the bottom of their social hierarchy but outside it.