Strawmanning is inventing a less defensible, normally more extreme, version of an argument. This is inventing a more defensible, less extreme version of an argument.
Being more defensible and being more extreme are not the same thing, in fact frequently it is the more extreme versions of arguments that are easier to defend.
Being more defensible and being more extreme are not the same thing, in fact frequently it is the more extreme versions of arguments that are easier to defend.