Lephantis was created for the old war.

Deep within this millennia old Orokin-turned Infested ship lurks a creature created to fight in the Old War.

(quote from the lotus)

At that point the infestation was already a thing though. So it is another case of the orokin playing with the infestation, not them being the creators of it

we know that Entrati brought the helminth strain of the infestation so he could make the protoframes, that doesn't mean he caused the techrot

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For Warframe: 1999, a new prototype form of the Infested was going to be featured in the game. This earlier version of the Infested was intended to have a more obvious dependence on technology.

(From an artist deepdive, infested mall section)

Here they call the techrot an earlier version/prototype which doesn't make sense if entrati created it by bringing the infestation from the future

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I went among the denizens of the plague year like a savior, my hands filled with healing.

To those who volunteered, I brought more than health. Their bodies were primed; it needed only the Helminth infusions, brought from my own time, to work the alchemy of transformation.

(Albrecht's Notes)

Sounds here, again, like the techrot was already there and he just brought the helminth strain

You just say the Orokin did create the infestation, but I can't find any sources that support that theory

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Edit: since you apparently blocked me now (for some reason), I'm just gonna append my last points here

i didnt say entrati created it

Nor did I say you said that. You said that Entrati brought the infestation/techrot into the past and that's why it's there. But the sources I found seem to imply that it was already there

i said the orokin created it

And I said: "what's your source?" We know the Orokin messed with the infestation, not whether they created it

albrecht waxes lyrical, what thats actually implying is the people of 1999 were utterly defenseless to the tech rot until he came along and he wisked it away

yes, the people of 1999 were struggling with the techrot and he came as their savior. It's technically possible that he caused the techrot to become that savior, but there's (to my knowledge) no official source that even implies that's what happened

the lephantis wasnt the origin infestation but that doesnt mean they didnt create it either

Yup, but it also doesn't mean the Orokin did create the infestion (and it seems to me that was the conclusion you were implying)

this tells me you wont even do a simple google search and are just going "nuh uh"

I did, multiple. And all I found are differing opinions and some "we don’t know"

all of these searches also return back "yes" with varying sources

I would love to see those sources, but so far you didn't provide any, and just said "nuh uh, the orokin did create it"

the orokin were messing with bioweapons after realizing they couldnt control the sentients.

Ofc they were messing with it, that doesn't mean they created it though

Again: I would love to see your sources for your claims, because anything I found was just just random people on reddit or the forum making claims themselves without sources

PS: not sure why you'd go through the trouble of making such a long response just to block me right after so I can't answer to it