I preempted some of the ridiculous comments from the title 🙄
I bought myself this belt last year, as a treat to myself to mark my first graduate job! It definitely takes an outfit to the next level, however I would say it’s overdone at this point. I wouldn’t buy it now, personally.
I think keep the shiny version as the matte buckle looks worn out/unpolished as opposed to having that aesthetic on purpose. I actually sent my belt back to Gucci initially as it looked unpolished like that on arrival, where they replaced it.
I don’t think the matte looks more classy at all. No one irl would notice the difference between the two, they stand out equally. The shine has never been a problem for me.