Re: What is your opinion on Crypto.com's Earn and Binance's Savings?
If you are used to storing your cryptocurrencies on exchanges, then it could be a choice of earning at least something while your cryptocurrencies lie there. But, it is highly recommended to store your cryptocurrencies at personal wallet because you never know what can happen to the exchange. 
For those who are regular traders or require some liquidity and keep in online exchanges then such things are worth it as you can get some extra interests on the amount kept with them rather than just lying idle under those exchanges. Also, one can easily exit anytime as well in Binance.