MS media creation tool sux. You can't use it to make bootable compilation of system utils, for example hiren's, with it. Also you can't make bootable win7 or win8 installation with it any more (cases where an ancient machine just cannot run win10, but is still good for facebooking and twittering).
Although it's a retarded util designed to force win10 everywhere, you should download MCT and then create win10 .iso file with it. That way you're sure win10 installation is not corrupted or bundled with unwanted "shady" code.
You can burn that .iso at any time as bootable optical media or create a bootable usb with any util capable of making bootables, so feel free to uninstall MCT later.