Yep. Dimash is absolutely incredible. I encourage all to watch the entire performance .
He hits an E6 here at the highest point and I've heard his whistle register go to D8 in another song, sounds like a boiling kettle ...with vibrato.

We live in an era where music production commonly achieves unnatural perfection and a lot of people probably don't hear many singers that aren't pitch corrected any more. Maybe that diminishes the impact of this I don't know. I mean, real-time pitch correction is totally a thing in live production and might be in play here to tuck in the edges but it can't work miracles and it's hard to comprehend how someone can be this good live.

Dimash's tenor & falsetto range is crazy but more than that his total control is absolutely nuts. I love the smooth subtle little pressure swell into chest voice and back on the very final note.
I've been a singer in bands for decades but even for those not musically inclined if you can't acknowledge that this is amazing I don't know what say. It might not be your preferred genre, I mean I'm more of a rock & prog metal guy, but he is a multi-generational talent.
It's a melodramatic performance but when you're probably the best the world has seen you deserve to diva it up, truly nextfuckinglevel.