Very late response to an older conversation (actually kind of two older conversations) but somehow I never saw any of them until now:
Comparing Vocaloid voices isn't a bad thing. Even if you disagree (I never thought Kiyoteru sounded even remotely similar to Kaito to begin with, for example -- though I couldn't tell the difference between Kaito and Gakupo for a while... somehow. This isn't the case anymore, at least), people have different opinions and thoughts. At this point I only get mildly annoyed if someone claims a new loid sounds like a mix of Merli/IA/Gumi Adult/Miku Dark/Lapis/high gen Rion. These comparisons get so specific sometimes that I honestly think it has to be a joke -- if it sounds like a mix of that many different Vocaloids... then that means their voice is unique, doesn't it?
And on another similar topic, I remember people immediately dismissing Uni once her voice was showcased because... she sounded like a bunch of the Japanese Vocaloids already. When that... literally didn't matter. The only thing that mattered was that she sounded different from SeeU, and she does, and yet people really went out there claiming that Uni had a bland and basic voice. I don't care what your actual opinion of her voice is but god don't compare Vocaloids from different languages to each other
(And maybe I'm more invested than I should be, but my experience with Korean Vocaloids is... a wild ride, haha. For backstory, I'm Korean myself and was incredibly excited upon SeeU's announcement -- then was immensely disappointed that she was K-pop themed [in hindsight I shouldn't have been, but I had expected a much more traditional design and voice, and honestly I still really want that]. Eventually I got over my annoyance with SeeU, but the whole thing with her VP made things suuuper messy for a long while... and then Uni came to quite literally save the community [obviously there are Korean Vocaloid fans that like non-Korean Vocaloids, but I just mean things were so quiet on the Korean producer front it seemed]. She's so important and I can't stand to see people just casually dismiss her orz)