No, you should decide with your wallet, which is not to pay Duolingo, and decide with your choice of social media, which is not to use TikTok, and most importantly, you should petition your representatives and vote accordingly. What TikTok and Duolingo are doing is morally shitty, but it’s basic late stage capitalism, and excepting the nations that are actively fighting against the shittiness of using and selling user data, it’s not illegal