I've recently had the dubious pleasure to have been told both that the high visibility of RAW-centric optimising online is an illusion and nobody actually plays that way in a real game, and that old-school playstyles are obsolete and nobody actually plays that way except from irrational attachement. The different users were equally convinced they were speaking truth, despite the impossibility of both being true.
Although I'm personally sick of trying to talk people out of One True Wayism about how people do play, let alone how people should play, my personal annoyance is nobody's problem but mine. However, both these recent discussions were had in the context of what should be allowed on this site, and that's not personal anymore. Trying to bend this Stack to favour any single subculture in RPGs is not cool.
I would like to be able to, in the future, hand a link to someone trying to limit who this site is for with One True Wayism. This is not so much about answers advocating for a playstyle — playstyle-based perspective is valid and expected in answers (when backed up, and/or with a good frame-challenge), and when they aggressively swerve into One True Wayism they typically get voted into the ground. So answers are generally fine. It's slagging playstyles or One True Wayism in comments — where accusations of "badwrongfun" usually happen — or when an answer starts badmouthing a different playstyle, that I want to be able to point people to this page to politely ask them to knock it off.
I ask the community to affirm that we embrace the plurality of how RPGs are played and value the input of diverse views, but none exclusively.