I don't know why I'm thinking about this, but I am...
... I'm often amused by all the "is it Trad" spinoffs, like girlfriends, dogs, cars, etc.
But the fact is, Trad is a clothing fashion, not a subculture; it's just all about clothes and how to wear them, not a prescription for allowable music to listen to, or places one should live.
So it's very different from, say, "Mod", which in addition to a distinct style of dressing DOES prescribe many other cultural elements, like musical tastes and political proclivities. Why is Mod a subculture, while Trad isn't?
I think it comes down to proximity.
Mod - and other subcultures - arise when people come together in a certain place and share ideas and trends in real time. So, 1960s London, for example, or 1970s San Francisco (Hippies being another subculture.) People are in the same place at the same time, and while they identify one another with fashion signifiers, they're also actually there amongst each other, sharing music, company, ideas, and so on.
Not so, the Trad. Trad is informational - a set of images and rules shared on the Internet, primarily in forums. We hear the complaint all the time: "I'm the only Trad in my office/neighborhood/family/town/etc."
Most "Trads" are isolated; they get their fashion orders online, not because they live in a society of like-minded folks who happen to organically align on fashion (witness the origins of Trad: Ivy League schools in the 1950s and 60s, men living proximity to one another, and indeed, in their case, sharing a subculture... indeed, many of these men probably knew one another well before college, having gone to prep school together and so on.)
But being, as one is, the lone "Trad" on one's street or in one's office, one is free to develop musical and political tastes independent of other Trads. There's no subculture there.
"Trad" is the remnant *fashion* of a subculture which *did* exist (maybe) about 60 years ago. That's it.
Left, right, jazz, classical, rock, hip hop... it's all good. Just make sure you have the right collar roll, and you're set!
There's no such thing as "non-trad" behavior because there's no *Trad* behavior.
DH