Nike RTFKT Crypto Ethereum Double Transaction Explanation (Flaw in Ethereum or Uniswap)

Nike RTFKT Crypto Ethereum Double Transaction Explanation (Flaw in Ethereum or Uniswap)
On December 2021 A ERC20 Token Name Nike RTFKT Studios was created and Liquidity was added. Cryptocurrency is meant to be Transparent on the blockchain. This Token was declared a scam on January 2 after's hundreds of investors invested in this token but there is still one problem remains. How did the creator of this token was about to fabricate a transaction on the blockchain by buying a token and sending the token all in one transaction with one gas fee. This Token marketcap has reached a high of 600 million marketcap before liquidity was eventually pulled. Uniswap is a decentralized exchange that allow user's to trade asset's. This Petition was created for the simple fact of a explanation on how does anyone on uniswap able to buy and send within one transaction. This is a feature that I haven't ran across.