He has a lot more sources in this article than just his own tweets. Out of several dozen sources linked in the article i counted five times that he linked to his own tweets. Four of those just have videos from other sources embedded, with the logo of where the video is from visible in the video. The fifth is showing and commenting on a Polymarket tweet. I agree that he should have linked those sources directly rather than over the extra step of going through his own Twitter account. This is self-promoting but it doesn't make the sourcing of the article less solid.