It doesn't matter what's wallet it is an online wallet or hardware wallet ( offline ) as long as you know how to keep a private key it is always safe. Easy to access blockchain.info and easy to use no need for a KYC, not like other wallets that were asking for your personal data.
https://blockchain.info it needs Gmail verification and phone number verification that's it, easy as that.
If you used that wallet I suggest you for short-term holding but if you want long-term hardware wallet is the best like trexor and ledger nano.
But the best suggestion is to stick with Wallet which you do have the full control like Electrum or Bitcoin core.
I agreed on this I must prefer into this wallet too.