Drywall is structural, when used on block walls it helps provide lateral support.
This is why being pedantic usually backfires.
Drywall is inherently structural.
Regardless. It’s furring strips, you want to argue furring strips aren’t used in structural applications? They are used in all three applications the person said they haven’t used them in. They also claimed to be a wood wroker elsewhere, so I don’t see how they would use anything structural anyways….