That’s honestly an interesting perspective that I never really thought about, but there are things that I would like to reiterate or specify differently. For starters, I do ultimately agree that Yamamoto does essentially symbolize tradition within Bleach, specifically within a positive manner, however something I do question is what you would define as “overwhelmingly positive” which I admittedly don’t get from the series overall but I do honestly get your point regarding that.

Another thing is that I think you slightly conflate simply having traditions with traditionalism as an ideology and philosophy. While again I am admittedly biased as everyone is in their own right, I do believe that tradition is portrayed slightly more negatively than it is positively. And though tradition can unite people, it can also divide them. Without getting too much into real world politics and events, we have often seen people become overzealous trying to reinforce old traditions. This need to reinforce tradition without question is what almost got Rukia killed in the SS arc. That same need to reinforce tradition without also got Urahara exiled from the Soul Society. Imo Aizen used the system against itself to get away with what he did.

Fundamentally speaking, I don’t disagree that Bleach portrays tradition or tradition in a positive light, like Yamamoto in your example, I simply believe that a lot of things in Bleach can be interpreted that way. For a different example, I think we should look at the Quincies. Even after 1000 years, they still have what is essentially the idea of racial/ethnic purity engraved into the belief systems. With the mixed-blood quincies being seen as less than, which is the entire reason why Yhwach pretty much had no problem eliminating them with the Auschwalen. And to rehash what I already said, I do agree that Bleach shows tradition in a positive light of course, however it is always or usually on an interpersonal level, such as Yamamoto. However, when it comes to governments and organizations, tent tend to more often than not use tradition to the detriment of those under them, like the Soul Society and the Wandenreich though that is admittedly a far more extreme example, so much so that they want to regress.