Maybe it's just bias from how the article is written. But damn...this seems like clear good evidence for corruption. At the very least, enough is there for credible innuendo.

Tldr: Early in Trump presidency (at the encouragement of Saudi Arabia) he said Qatar (our official ally in the middle east) is financing terror. And he kept doubling down on it. Qatar was like "what? not us?"

So Qatar started working to get back on Trump's good side. They spent money on lobbyists like usual to try to influence people. But they also made a direct investment in Trump. They rented office space in Trump's building in San Fran. Annual payment to Trump ~ $140k. And didn't use it.

Shortly after, Trump and the Qataris are best buds.

https://www.vanityfair.com/news/2020/09/how-everyone-is-quietly-lining-trumps-pockets