It certainly is, but not any more than this very discussion. See, it’s entirely subjectivity at stake here. If I open a thread saying “red is prettier than blue”, the blue gang won’t stand still, and the red crowd shouldn’t be astounded.
Please, I don’t mean any offense to your person, as I get your intentions and actually believe in the same thing as you: there’s nothing set in stone, you can play however you feel fit. Developers and hardware used varied all the time, nobody was developing games exactly the same. You can even choose unrealistic visuals if you will (think edge-smoothing shaders). But you can’t rationalize that; and, even if unintentionally, your thread tried to do that, when it’s all a matter of taste or convenience.
Perhaps, if this thread started as just as an appreciation post for standards that not necessarily adhered to the norm, people would be more forgiven and just talk about what they think it looked good; no right or wrong, no 6500k or 9300k, no composite or rgb, no crt or lcd, no console or emulation… just a friendly talk about things one personally likes.
Nonetheless, is pretty lame to dictate how anyone should enjoy their personal hobby (not directing this commentary to anyone here). This happens all around the internet, it would be wiser to leave that behavior outside this forum.