Very candid and thought out post.
For me, my flavors evolved with time. When I first started smoking good cigars (after years of Black and Milds), I preferred the strong, in your face flavors that I found in Nicaraguan and Dominican cigars. I was gifted a few Cubans and bought some fivers over time, and smoked both Cuban and non Cuban somewhat equally.
The biggest change for me came when I learned to "nose smoke".....snome call it "snorking", some say it's a retrohale...but I found an abundance of flavors and nuances that I hadn't really experienced before. Over time, I came to enjoy the complexities and flavors I found in Cuban cigars with some age on them more and more. Over time, I have come to prefer this over the majority of NCs I smoke, so for me I would say my palate definitely "evolved" over time. But I understand that this is my preference, and while a great many of my BOTL friends share this preference, many others still prefer the strength and flavors on cigars from other part of the world, and that's a good thing. Hence the mantra "Smoke what you like, like what you smoke".
And though I prefer Cubans at this point, it doesn't mean that I don't know that there are scores of excellent non Cuban cigars out there, and many I still enjoy for a change of pace. An analogy might be that I ride a Harley, but I still know that the Japanese and Germans, for instance, build some wonderful motorcycles, and in some respects, a superior machine. I can appreciate the Kawasakis, the Yamahas, the BMWs, and respect that some of my friends prefer to ride those. And we can ride together and enjoy the ride, together and separately.
The same with cigars...while you may gravitate to what suits your current tastes, you can understand that there are many great cigars out there from many places, and not react negatively to those who gravitate mainy to those.