Trocador shows it explicitly whether a specific CEX is no-log or requiting IP logging, which you can choose. This new thing doesn’t have TOS nor Privacy Policy to begin with. Yet as long as you use onion, logging by the front-end is rather irrelevant.
Even if the front-end is not logging anything (which no one can verify), a CEX behind it surely records the tx and retains it as required by laws (some of them might be less than perfectly legal and might not record anything, though that would mean a different kind of risk). Using a CEX is more or less risky, be it Trocador or something else. Some may think that an instant swap by CEX is convenient. Personally I prefer DEX, even though it may be less convenient, even though Monero.town itself has an official affiliate link to Trocador too.