They do have graphics rendering circuitry, but e.g. fewer shading units and more graphics memory, or support for faster interconnects. You can look up the specs and compare. The differences are varied, but IMO not enough to claim they're not GPUs anymore. Even gaming focused GPUs are GPGPUs these days: the RTX 4090 has as many Tensor Core units as the A100. And you can still use e.g. DirectX, OpenGL with a datacenter grade GPU.