I like to use system restore before installing software that I'm unsure if I want to keep. I certainly don't use it as a backup. As far as the System Volume Information folder, I took ownership of it in order to gain access. I thought I might be able to delete the files manually, but this is not possible in Windows 10 as it was with previous versions. I was happy to hear that CCleaner had an option for this, but it would appear that it doesn't work the way I had hoped.
I honestly don't see the point of clearing the menu of the option, without deleting the actual restore point to gain disk space. I mean, what if when you emptied your recycle bin, Windows only cleared the entries from file explorer, but the files still remained hidden, taking up space?