It’s 32 core GPU and 12 to 16 core CPU; two separate core counts. You gotta remember Apple is doing it a “little different” with the whole SOC design.
The 32 core CPU is projected to have a 128 core GPU paired with it. And that thing may just be in a league of its own.
The M1’s 8 core GPU separate from its 8 core CPU is already putting up impressive numbers for an iGPU.
So I guess we can only wait and have a little fun with the rumor predictions. It not something to get butt hurt over.