that clip or Zelensky talking to Ukrainian troops who refuse to stand down, and didn’t mention that clip is from is stupid TV show

I think it's real.

https://www.kyivpost.com/ukraine-politics/im-not-a-loser-zelensky-clashes-with-veterans-over-donbas-disengagement.html

On Oct. 26 [2019], President Volodymyr Zelensky locked horns with war veterans in the front-line town of Zolote in Luhansk Oblast.

The president was pushing a mutual disengagement of troops and armaments at the front line flashpoint. The veterans opposed this plan.

Soon, however, a video of their disagreement shot through Ukrainian social media, fueling passions across the country.

Video from Volodymyr Zelensky’s two-day visit to the front-line city of Zolote, posted on his official Facebook page. (Facebook/Volodymyr Zelensky)