I think it's not a bad wallet for using it to do some dApp transaction as it's supported by many sites that allows us to do decentralized transaction. It's a closed source wallet therefore we can't trust it a 100% but if you're looking for a wallet that you can use to carry out some small transactions then trust wallet can be used. They still have a perfect reputation as they haven't done anything that makes us not to trust them but just as they're a closed source wallet that's the reason they're not the best.

I think as a cryptocurrency investor, you don't have to have only one wallet and your coins shouldn't be in one wallet. You should have multiple wallets for different purposes as if one get compromised, your coins in your other wallets won't be affected as you can't be a 100% sure that you can protect yourself from hackers. We can make a mistake and expose our wallets to hackers so multiple wallet is good.