To explain exactly, enabling Remote(Delegated) Account on the left side of the screen will only enable Deligate account, not harvesting.
Remote (Deligate) harvesting is enabled by setting additional settings on the right screen.
(Also, I think that the old explanation text is displayed as 6xem, but now it is 0.15xem.
If 6xem is displayed on your screen, it means that you are using an old wallet. In that case, please update to the latest version. )
In order to display the secret key, a password is required. And even if you display your password, you will only see it. Your private key will never be disclosed unless you copy and upload it on the Internet.
If there is something to know about it, there are cases where the method of managing the backed up secret key is incomplete, or if the PC is infiltrating into a hacking program such as a virus.
Likewise for Remote (Deligeted) account, no private key can be made free unless the secret key is known.
Also, if you have never made Remote Account Active, then no one knows even the address of the remote account.
However, there is the possibility of accidental transmission of xem and mosaic to Remote account.
However, if you enable Remote account, no one will be late for anyone to that address. In this case, your “Normal account” and Remote Account are linked on the block chain, so your Remote Account is information that everyone knows.
However, please do not worry because this will not lower security.
Thanks.