hi! i want to talk about why i have this impression (ie, that sentients are native coded), since i am guilty of maintagging one such complaint. i did this in hopes of opening some dialogue about it, which i suppose i succeeded in, but i'm sorry for the hurt it may have caused you personally.
sentients, while originally being mere machines, were isolated in tau, an otherwise empty system, long enough to develop both sapience and their own full society. we were given hints of this as early as the natah quest; it's been established for a very long time that sentients are natives to tau in all the ways that matter.
the game uses the phrasing of the orokin wanting to "colonize" tau, but it wasn't (originally) colonialism in the way europe colonized the americas, aka, chasing out an established people. the sentients were sent there as terraforming machines; they didn't conquer anyone.
buuuuut... the sentients are stated to have been living independently, cut off from the orokin, developing their own society, mores, family structures, etc, for a very long time before they jumped back to the origin system and instigated war with the orokin.
as an aside: the recent writing has been playing extremely fast and loose with established orokin-era lore. the old peace in particular does not actually fit into the timeline in any sensical way; via the lotus herself the tenno were locked away in the second dream by margulis before the war started (the final convo in the second dream quest), and did not have access to transference without the somatic link until teshin's aid in the modern era. margulis was executed for her blasphemy before the warframe project was fully realized, so she couldnt have been alive on tau during the peace era as it was presented. etc. i have seen some people speculate that the entire old peace quest was falsely constructed memories for some reason, because of loid's line about poisoned histories, but that's a reach, given everything about the quest is presented to us entirely straight with nothing "suspicious", such as glitches or static or anything else odd, just the narrative inconsistency. it's far more parsimonious to regard that as poor writing, courtesy of bringing in a dark romantasy writer and giving her narrative control over a niche scifi game with ten years of intricate established lore. but i digress.
so youve got the sentients, a people from a distant land where theyve been living for generations (or the sentient equivalent thereof), who realized that the orokin were still planning to move to tau and stripmine it the way theyd stripmined their own system. and they were like "uh, no, we're not letting you do that here" and started the war. with the explicit motivation of wanting to protect their homeland from colonization and exploitation. much like how indigenous americans fought to protect their homelands from the colonizing forces of the europeans pushing further and further west.
this is all established before the old peace, but that quest made the coding extremely explicit. there's the peace treaty itself, echoing the many, many peace treaties europeans signed and subsequently violated whenever they wanted more land. there's adis's name being "truth-bloom", which echoes indigenous naming conventions (a few historical indigenous names: Spotted Elk, Sitting Bull, Scarlet Point, Little Crow). there's the fact that adis is being deliberately trained in the ways of the colonizers so he can impress them enough to think it's worthwhile to not murder his whole species. he's literally wearing a mask and pretending to be human (white), because the orokin don't respect his personhood as a sentient (native person). there's the deliberate wholescale poisoning of the blooms, a native species that was intrinsic to the indigenous way of life, as a method of crippling their ability to resist colonization (see: the mass slaughter of the bison that were central to so many plains societies.)
i am trying very hard to be straightforward and not condescending, and i apologize if my tone dips sarcastic. but the parallels, while almost certainly not deliberate, are pretty plentiful.
and when i say "not deliberate", what i mean is i don't think the warframe team set out to tell a story about colonizers conquering and genociding an indigenous people. if that had been their intention, we would have... well, soulframe, lol.
but the fact that the writers thought "hm yeah all this just Seems Right for Some Reason" is a manifestation of a lot of unexamined biases about Cultural Stories Featuring People Who Are Not Like Me, and when taken in agregate, and added to the new content where the sentients are all living in slums or running casinos (which in case youre not aware are two nasty stereotypes about indigenous americans in the US!) ... it's not good.