It seems like the issue is a lot more due to very bad customer service, rather than bad security. As far as I know Coinbase hasn't had a major breach yet, and the "hacks" are mostly due to user error, rather than problems with the Coinbase platform.
Yeah, don't think they've ever been hacked themselves, it's always individual accounts getting phished perhaps -- though to be fair, I suppose Coinbase, or perhaps any exchange for that matter, do need, as part of licensing agreements, to do enough to educate users about the dangers and risks of these hacks, or perhaps implement safeguards that prevent simple hacks like that from happening.
Binance, for example, doesn't send out any sort of info or awareness but I do get a lot of mails from other licensed exchanges (and also the 2fa limit).