First contact was on the here-named eta-carinae system, we did a holiday tour there long ago and heared about earth from a scientist that rescued a human instead of just studying and thus could not leave him there with his memories about him. the human was talking about star trek, its similarities and real differences all the time. he already spoke fluently in standard Sjesh/sound w/o any interfaces so we listened directly to his true mind. he even had a very worn out tng tshirt in his personal memory items box. i mean he really had used his memory items before! that made us curious and the rest is history. However he is now back here, as we managed to arrange his behavioral training to hide his experiences well, he passed all the tests and got his transport back, but with his biologic cells clock reset to his 20th to compensate the decades he lost out there a little bit. it is possible he could become an ambassador for earth one day, but it looks unlikely that he would want that given the circumstances here, a task he always compares with the mytholigical boulder of Sisyphus (that really never existed physically) whenever he is asked about his opportunity.
just kidding, first contact with TNG was in school, other kids talked about the first episode. i could not watch it at home and also had other problems to fix at that time so i missed a lot of the start of it :-/
however i am trying to train myself for writing in general as i have ideas for a longer story (but not within the trek universe) and as the above text came to my mind i just wrote it and hope you don't find it too misplaced here or badly written.. however any feedback is welcome.
the OS was not the comparison, but the hardware it runs on (just as @Freefall said) but also you seem to be wrong with your other assumption:
Which seems not to be the case as install instructions for another OS can be found here (i didn't try it though) for the mentioned device:
https://wiki.lineageos.org/devices/pdx215/
lineage os still is an "android", but another vendor with clearly different approach than the original firmware and what hinders you from writing bsd drivers and compiling a bsd kernel for it instead? So i count the Xperia 1 III as NOT bound to any OS or OS vendor.
But despite the way longer possible support/security, freedom of choice and endless other possibilities that often come along with free OS choice, this pure and great advantages weren't even mentioned there, thus it wasnt an OS comparison as it also wasn't a bound-to-an-OS vs. absentness of vendor-lock-in-limitation-jungle comparison.