(maybe dumb question) does the lenovo legion go s come with steam OS?

what i mean by this is, i don’t have to do the whole outside hard drive steam OS downloading myself right? i’ve seen it and really would just rather not deal with that,,,

it says steam OS in the listing title and it’s the purplish tinted one

but im genuinely an idiot noob who doesn’t know much about handhelds in general, i only have my DSes and switches so i’m inexperienced in litterally any other company

so in short i don’t have to actually set it up right? just log into steam and off i go?