Based on what evidence, exactly? Trust Wallet is closed source, so you have absolutely no idea how good or otherwise its security is. It is also a hot wallet, meaning it is one of the least secure wallets you could choose to keep your coins on. And given that it is owned and operate by Binance, who have suffered numerous security breaches over many years leading to both the loss of coins and the theft of private data and KYC information of their customers, I wouldn't be placing much faith in its security at all.

There is literally no good reason to choose a closed source wallet, especially not one owned and operated by Binance.