Make sure you’re being careful at this point not to move the toilet too much, as this will cause the seal on the toilet to break.

You may prefer to omit this last step. If you have a leaking wax seal on your toilet, or if a wax ring seal leak develops later, you will trap water under the base of the toilet. If the sub-floor is wood it will eventually rot it out leading to all sorts of problems when repairs are necessary.