Thanks.

Raising awareness about the reasons why you should protect your keys is just one side of the equation.

There are better ways of implementing the same functionality without asking for the primary private keys. In a perfect world there should be no need for them to leave your personal wallet.

Even now, if you know what you are doing you could generate multiple private keys, one for each service that you use and only of the kind that the service need.

Then it becomes easier to later remove the keys of services that misbehave.
That way only your account provider will still have power over you.