I totally agree on that, holding your coins in multiple wallets are the best thing to do to avoid phishing. It might look complicated but it is a good way to diversify, because its easy nowadays for hackers to do their stuff.
Holding the multiple wallet is suit for long term holders. But right now many traders are involved in the Crypto investment so better placed in one wallet is good for buying and selling. This is technical world so hackers are always looking to your account so we only protect our investment. My suggestion is Google authentication is good for the wallet.