I just checked, she only buys meme coins. 2021, what a year.
She "buys" (read: mentions) whatever is popular at the moment; 2 days ago it was DeFi, yesterday it was NFT and today its memecoins. That's what all those influencers do, they are mentioning whatever will bring them the most followers and impressions, and memecoins are hot at the moment. Rinse and repeat.
I think they mention whatever pays them money, or they mention one that they are holding so later can dump on their followers.