As I said, given the criminal elements in Ukraine, and since you have never met Davydov, you have no idea who he is, or what he looks like. For two people to be roughly the same age, from the same country, with the exact same two spellings of the first name, should give reasonable people pause.
In "A Top-10 of Pro-Ukraine YouTube Warriors to Guide You Through 2023," Kyiv Post, January 2, 2023.
Source: https://www.kyivpost.com/post/6341
Since Kyiv Post seems a trusted source on these threads, one can be assured "He recently left Ukraine for the sake of his wife and daughter for an undisclosed safe country in Europe."
The YouTube "About" and all other YouTube stat entities locate the uploads for some years now as in Switzerland. Period.
And from the 'front lines' in Switzerland:
"Another popular channel is Denys Davydov. He is a former airline pilot based in Kyiv, Ukraine, who lost his job in Ukraine once the war started. Now he focuses solely on the Ukraine war and has over 464,000 subscribers to his channel. Davydov is routinely posting 600K to 800K views per video that he posts now. That could be bringing in $1800 to $2,400 or more per video at a $3.00 RPM (revenue per mille) rate. His monthly YouTube earnings could be over $63,000. Even if it is half of that rate this YouTube star is making serious bank."
In "YouTube Channels on the Ukraine War Are Making Bank," Newsbreak.com, 22 October 2022.
Source: https://original.newsbreak.com/@mark-hake-1587739/2795821285140-youtube-channels-on-the-ukraine-war-are-making-bank
As Major General Butler observed, "War is a racket." Indeed.