stealing books is about as wrong as stealing anything else
but copying books, or reading them without paying, are not stealing, that's just twisted propaganda language.

sharing culture is good and takes nothing away from anyone who earned it
attacking others' freedom (the only way to break the gpl) is not good, and it takes away what others ought to have
any argument twisted so as to make them appear similar is itself immoral

you wish to use and increase your powers to control and deprive others of that which they should have
we use sparingly the unjust power given us to reassure nobody can deprive others of that which they ought to have
we are not the same