Sure if you compare them with Lastpass they are the better of the two choices but they still suffer from the trust model.
Since they store so many peoples passwords, they are a massive target for hackers and you have to trust that they are operating securely and their employees will never be compromised.
Nothing is 100% secure and you're only as strong as your weakest link. I used to hang around privacy and security groups and they used to recommend BW was enough for most people. If you're high risk then something offline (pen and paper!) more suitable. I'm not high risk and I don't store my HW wallet keys there. I have security backups saved offline for important sites too. There's always a risk of course.
I just prefer to remove counterparty risk but of course this varies per person. But yea Bitwarden is fine if you're aware of the risks, cetainly better than Lastpass.
I just don't like trusting a company with important data.
