The title is slightly wrong. The actual announcement says EVGA will not produce any next-gen video cards, not just Nvidia’s. Implying they won’t produce AMD or Intel ones either.
AFAIK they haven't.
According to Kotaku, they won’t be in the GPU game anymore with 3rd parties: https://kotaku.com/evga-pc-gaming-nvidia-gpu-rtx-40-series-3...