Maybe the future is "LLMO" instead of SEO, where pages are optimized to be more easily readable and navigable by LLMs and agents. Ironically this would make them better IMO, less Javascript bloat, faster load times, no cookies or tracking...
There isn't a clever new acronym for it yet, but I'm sure it's coming. Right now people are just calling it LLM SEO. I assume the discipline will someday be shortened to AIO or similar.