KDE Wallet is primarily a password manager. So if the launcher saves your password this is probably where it is storing it. Why invent your own storage when you can use one that is already built? For more information I recommend the ArchWiki which has plenty of information that is not arch specific. Also if you use Gnome I would imagine it would access Gnome keyring which serves the same function. KDE Wallet

They probably wanted a severe TOS update for you to agree to.

Yes, it was multiple births. Do you want to question her?

You can also do this in Texas but the business can refuse the sale.

Linux is all about computing how you want. Remember that it is just a meme.