Interesting but flawed reasoning. I have read all of the Dune books, including the ones that were written/completed by his son. Apparently I ahve also read the ones you have much more ofter. Arakis is one of the major characters of the first book (in later books you discover that the planet was not the character instead it is the worms), but ecology and enrinmental activism is not one of the major themes. It is at best a side effect. The major themes of Dune are all religious, moral, and mercantile.

Additionally, there is no commentary about homosexuallity in the novel. BH is simply, intentionally, displayed as possessing the most offensive and disgusting traits imaginable. You would be just as accurate to attempt to fabricate some sort of parrallel between obese people and sexual deviancy in the novel.

You are making the error that entirely too many reviewers have and will do. Attempting to find themes in prose that do not exist because the author did not write them. Too many reviewer tripple-think into wonderful themes and messages by grabbing various images and actions and weaving them into a coherant "message" that simply does not exist, because the author was not writing them.

There is no emviromental activism as we know it today in the novels, there is only an effort to convert a natural desert into airiable land. There is no statement on homosexuallity, there is simply an incredibly evil sadistic individual who partakes in every manner of diviant behavior imaginable, becasue he can.

If you want to investigate the thems, investigate the ones the authro wrote about: Slavery, Religion, Orthodoxy (morallity, i.e "The Greater Good", Polotics (money=power, rule by fear vs loyalty). There is plenty to discuss, without creating new themes form whole cloth to further ones oown adgendas and biases. Alas, entirely too many reviewers and critics desire this, instead of investigating and discussing wghat teh auther actually intends.

Though intelectually flawed, your piece is well written and supported by the passages you selected, kudos.