Kali is secure as in once it’s configured, it cannot be accessed without creds, keys etc. That meets the definition of ‘secure’. It’s just Linux with a bunch of pre installed packages.

Of course something can always be more secure. But saying Kali isn’t secure is like me saying your PC isn’t secure because it isn’t air gapped like my most secure PC.

2012 was a bad time.

Except it is secure by design.

But you’re right about it not being meant as a daily driver.

Not with that attitude.