Being able to see other people's style and learning from it can be an unheard of luxury in many work environments (at least the majority I've been exposed to). You are indeed most fortunate.

No, luck has only a little to do with it. I insist on good practices at the places that I work and only rarely have to work hard to overcome significant resistance to getting good practices going.

If I'm working at a place where I'm finding too much resistance, then I also work on improving the work place's general acceptance of improvements.

I'm usually quite successful. And when a workplace is beyond my ability to effectively reform, then I find a new job. But that has really only happened to me due to a corporate take-over where a powerful, established, and dysfunctional culture suddenly flowed in from the other company so that it was much better for me to move on rather than to endure the dysfunction for the time required to really make a dent in it. (This has actually happened several times but that is still quite infrequent considering the time span.)

Heck, just responding to the assertion that we must have homogenous style with frank and confident skepticism is often enough to significantly undermine the support of that assertion, in my experience.