Most of the Image Editing "Spaces" run on ZeroGPU, which is free to users and developers (paid for by HuggingFace investors). Many of those Spaces are advertised as NSFW and there is no claiming HuggingFace has been unaware of what they're used for.
Spaces ZeroGPU: Dynamic GPU Allocation for Spaces · Hugging FaceWe’re on a journey to advance and democratize artificial intelligence through open source and open science.huggingface.co