Greenfield alleged that Jenner's team initially launched the JENNER token on Solana and then released a token with the same name on Ethereum two days later, causing the former to devalue. During this period, they also promoted another pet-themed token, BBARK. Jenner's team reportedly profited by collecting a 3% transaction fee on the Ethereum version. Previously, Jenner was involved in a controversy surrounding memecoins managed by Sahil Arora.