This is an important question that I'll answer very quickly.
When you have the wilful promotion of hate, a person who is convicted of that could still be convicted but also be convicted of a second charge—the wilful promotion of hate using hate symbols—which would attract a greater degree of culpability and potentially a greater penalty, recognizing that the use of hate symbols, when you're wilfully promoting hate, can cause greater damage to both the individual and the entirety of the community.
I don't find these points to be inconsistent with one another, but instead that behaviour could potentially face an additional charge with a more serious penalty, because of the manner in which a person chose to promote hate to cause more damage to an affected community.