I wouldnt say no one abroad is interested in AI SEO, its actually getting a lot of attention in the US and Europe especially with ChatGPT, Gemini, Perplexity and AI Overviews changing how people discover information.
The difference is that in China AI SEO has become a major buzzword very quickly because businesses are actively trying to optimize for AI powered search platforms and large language models, overseas the same concept is often discussed under terms like "LLM optimization", "AI search optimization" or "GEO (Generative Engine Optimization)" rather than simply "AI SEO".
So the interest exists on both sides, the main difference is branding and market focus, not the level of attention.