You could be bound by a significantly changed privacy policy simply by logging in and using the app, without actively clicking to agree — so it's important to periodically check the policy for updates.
Uniswap Labs collects minimal personal data by default, but does log your public blockchain wallet address and device-level information, and shares your wallet address with third-party blockchain analytics providers to screen for illicit activity. Your transaction history on the blockchain itself is publicly visible and cannot be deleted or altered by Uniswap Labs. You can submit a data access or deletion request by emailing privacy@uniswap.org.