I don't think anyone is saying it's Zelensky pocketing it all but Ukraine has had huge problems with corruption and although they are really moving forwards they are still way down the table.
'According to the most widely cited source—the annual ranking of corruption by Transparency International (TI)—Ukraine has scored poorly for decades. As late as 2016, amid major anti-corruption reforms, TI’s survey still judged Ukraine to be as corrupt as Russia. The most recent TI index suggests that Ukraine has made some strides since then, but it still ranks 104th among 180 countries. Denmark is ranked first—meaning that it is perceived as cleanest—while Russia ranks 141st.'
'Last year, Ukrainian authorities opened a criminal case against Dmytro Firtash, an oligarch also wanted in the United States for corruption, alleging that his group embezzled $484 million from the Ukrainian state treasury in a scheme involving gas transit fees.'
I'm not pro Trump by any means though, voting in a narcissistic megalomaniac is never a clever move in my book. That doesn't mean though that we should pretend Ukraine is squeaky clean.
foreignpolicy.com/2024/03/06/ukraine-corruption-reforms-russia-war/