Coinbase holds almost 98% of their funds in cold wallets so it's less error prone to get hacked. You may get your funds back if you are hacked. But still, there's literally no good reason to store any funds on any exchange in my opinion. Why would somebody risk their funds? And KYC, locking gambling money, the app could also be a downside for them.
That's why it's better to have your own hardware wallet if you want to have a safety feeling for storing your huge volume assets, but if you are a regular user which not hold to much then I think coinbase is good since for sure the people wants from it is the convenience for using on their daily transaction and I got no issue using it even from now but evethough no issue for me occur still I'm still careful since for me exchangers still not safety since it's prone from attacks and other forms of it.
This was actually the case for me. But after my funds were locked a month ago, I thought this can't be the way to store coins anymore.