One historical theological view holds that God creates speech in another subject and denies speech subsisting in the divine essence. The reply distinguishes creating an effect from being truly described by an attribute.
For example, if someone writes words on a wall, the wall does not thereby become a speaker; being the location of an inscription is not the same as speaking. The example illustrates only the distinction between a locus and the subject of attribution.
In the Sunni exposition under discussion, inner divine speech is affirmed as eternal and subsisting in God.